Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
69 results · page 1 of 2
Jul 2, 2026Improper access control in Azure Synapse allows an authorized attacker to elevate privileges over a network.CVE-2026-26145 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 4.8
Improper access control in Azure Synapse allows an authorized attacker to elevate privileges over a network.
- Product
- Azure Synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 19, 2026Execution with unnecessary privileges in Azure Synapse allows an authorized attacker to elevate privileges over a network.CVE-2026-48584 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comCritical 9.9
Execution with unnecessary privileges in Azure Synapse allows an authorized attacker to elevate privileges over a network.
- Product
- Azure Synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 28, 2026Synapse is an open source Matrix homeserver implementation.CVE-2026-45078 · Other software · element-hq · reported by GitHubMedium 6.8
Synapse is an open source Matrix homeserver implementation. Prior to 1.152.1, local authenticated users can cause Synapse to starve other requests of CPU and lead to other requests failing, causing other users to be denied service. This vulnerability is fixed in 1.152.1.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 28, 2026Synapse is an open source Matrix homeserver implementation.CVE-2026-45076 · Other software · element-hq · reported by GitHubMedium 5.1
Synapse is an open source Matrix homeserver implementation. Prior to 1.152.1, in federated rooms, malicious homeservers can craft room events in such a way that prevents Synapse from providing full history to paginating clients. Clients could therefore fail to display room history. This vulnerability is fixed in 1.152.1.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 29, 2025Razer Synapse 3 Chroma Connect Link Following Local Privilege Escalation Vulnerability.CVE-2025-9871 · Other software · Razer · reported by zdi-disclosures@trendmicro.comHigh 7.8
Razer Synapse 3 Chroma Connect Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Razer Synapse 3. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the Razer Chroma SDK installer. By creating a symbolic link, an attacker can abuse the installer to delete arbitrary files. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-26373.
- Product
- Synapse 3
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 29, 2025Razer Synapse 3 RazerPhilipsHueUninstall Link Following Local Privilege Escalation Vulnerability.CVE-2025-9870 · Other software · Razer · reported by zdi-disclosures@trendmicro.comHigh 7.8
Razer Synapse 3 RazerPhilipsHueUninstall Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Razer Synapse 3. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the Philips HUE module installer. By creating a symbolic link, an attacker can abuse the installer to delete arbitrary files. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-26375.
- Product
- Synapse 3
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 29, 2025Razer Synapse 3 Macro Module Link Following Local Privilege Escalation Vulnerability.CVE-2025-9869 · Other software · Razer · reported by zdi-disclosures@trendmicro.comHigh 7.8
Razer Synapse 3 Macro Module Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Razer Synapse 3. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the Razer Synapse Service. By creating a symbolic link, an attacker can abuse the service to delete arbitrary files. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-26374.
- Product
- Synapse 3
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 8, 2025Synapse is an open source Matrix homeserver implementation.CVE-2025-61672 · Other software · element-hq · reported by GitHubMedium 5.3
Synapse is an open source Matrix homeserver implementation. Lack of validation for device keys in Synapse before 1.138.3 and in Synapse 1.139.0 allow an attacker registered on the victim homeserver to degrade federation functionality, unpredictably breaking outbound federation to other homeservers. The issue is patched in Synapse 1.138.3, 1.138.4, 1.139.1, and 1.139.2. Note that even though 1.138.3 and 1.139.1 fix the vulnerability, they inadvertently introduced an unrelated regression. For this reason, the maintainers of Synapse recommend skipping these releases and upgrading straight to 1.138.4 and 1.139.2.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 20, 2025Synapse Mobility 8.0, 8.0.1, 8.0.2, 8.1, and 8.1.1 contain a privilege escalation vulnerability through external control of Web parameter.CVE-2025-54551 · Other software · FUJIFILM Healthcare Americas Corporation · reported by vultures@jpcert.or.jpMedium 5.3
Synapse Mobility 8.0, 8.0.1, 8.0.2, 8.1, and 8.1.1 contain a privilege escalation vulnerability through external control of Web parameter. If exploited, a user of the product may escalate the privilege and access data that the user do not have permission to view by altering the parameters of the search function.
- Product
- Synapse Mobility
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordhealthcaresolutions-us.fujifilm.comjvn.jp
Jun 4, 2025A local privilege escalation in the razer_elevation_service.exe in Razer Synapse 4 through 4.0.86.2502180127 allows a local attacker to escalate their privilegeCVE-2025-27811 · Other software · Razer · reported by MITREHigh 7.8
A local privilege escalation in the razer_elevation_service.exe in Razer Synapse 4 through 4.0.86.2502180127 allows a local attacker to escalate their privileges via a vulnerable COM interface in the target service.
- Product
- Synapse 4
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordapp.inspectiv.comgist.github.com
Mar 26, 2025Synapse is an open source Matrix homeserver implementation.CVE-2025-30355 · Other software · element-hq · reported by GitHubHigh 7.1
Synapse is an open source Matrix homeserver implementation. A malicious server can craft events which, when received, prevent Synapse version up to 1.127.0 from federating with other servers. The vulnerability has been exploited in the wild and has been fixed in Synapse v1.127.1. No known workarounds are available.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 3, 2024Synapse is an open-source Matrix homeserver.CVE-2024-53867 · Other software · element-hq · reported by GitHubMedium 4.3
Synapse is an open-source Matrix homeserver. The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. This vulnerability is fixed in 1.120.1.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 3, 2024Synapse is an open-source Matrix homeserver.CVE-2024-53863 · Other software · element-hq · reported by GitHubHigh 8.2
Synapse is an open-source Matrix homeserver. In Synapse versions before 1.120.1, enabling the dynamic_thumbnails option or processing a specially crafted request could trigger the decoding and thumbnail generation of uncommon image formats, potentially invoking external tools like Ghostscript for processing. This significantly expands the attack surface in a historically vulnerable area, presenting a risk that far outweighs the benefit, particularly since these formats are rarely used on the open web or within the Matrix ecosystem. Synapse 1.120.1 addresses the issue by restricting thumbnail generation to images in the following widely used formats: PNG, JPEG, GIF, and WebP. This vulnerability is fixed in 1.120.1.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 3, 2024Synapse is an open-source Matrix homeserver.CVE-2024-52815 · Other software · element-hq · reported by GitHubHigh 8.7
Synapse is an open-source Matrix homeserver. Synapse versions before 1.120.1 fail to properly validate invites received over federation. This vulnerability allows a malicious server to send a specially crafted invite that disrupts the invited user's /sync functionality. Synapse 1.120.1 rejects such invalid invites received over federation and restores the ability to sync for affected users.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 3, 2024Synapse is an open-source Matrix homeserver.CVE-2024-52805 · Other software · element-hq · reported by GitHubHigh 8.2
Synapse is an open-source Matrix homeserver. In Synapse before 1.120.1, multipart/form-data requests can in certain configurations transiently increase memory consumption beyond expected levels while processing the request, which can be used to amplify denial of service attacks. Synapse 1.120.1 resolves the issue by denying requests with unsupported multipart/form-data content type.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 3, 2024Synapse is an open-source Matrix homeserver.CVE-2024-37303 · Other software · element-hq · reported by GitHubMedium 5.3
Synapse is an open-source Matrix homeserver. Synapse before version 1.106 allows, by design, unauthenticated remote participants to trigger a download and caching of remote media from a remote homeserver to the local media repository. Such content then also becomes available for download from the local homeserver in an unauthenticated way. The implication is that unauthenticated remote adversaries can use this functionality to plant problematic content into the media repository. Synapse 1.106 introduces a partial mitigation in the form of new endpoints which require authentication for media downloads. The unauthenticated endpoints will be frozen in a future release, closing the attack vector.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 3, 2024Synapse is an open-source Matrix homeserver.CVE-2024-37302 · Other software · element-hq · reported by GitHubHigh 7.5
Synapse is an open-source Matrix homeserver. Synapse versions before 1.106 are vulnerable to a disk fill attack, where an unauthenticated adversary can induce Synapse to download and cache large amounts of remote media. The default rate limit strategy is insufficient to mitigate this. This can lead to a denial of service, ranging from further media uploads/downloads failing to completely unavailability of the Synapse process, depending on how Synapse was deployed. Synapse 1.106 introduces a new "leaky bucket" rate limit on remote media downloads to reduce the amount of data a user can request at a time. This does not fully address the issue, but does limit an unauthenticated user's ability to request large amounts of data to be cached.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 3, 2024An issue in Razer Synapse 3 v.3.9.131.20813 and Synapse 3 App v.20240213 allows a local attacker to execute arbitrary code via the export parameter of the ChromCVE-2024-29404 · Other software · reported by MITREHigh 7.8
An issue in Razer Synapse 3 v.3.9.131.20813 and Synapse 3 App v.20240213 allows a local attacker to execute arbitrary code via the export parameter of the Chroma Effects function in the Profiles component.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 23, 2024Synapse is an open-source Matrix homeserver.CVE-2024-31208 · Other software · element-hq · reported by GitHubMedium 6.5
Synapse is an open-source Matrix homeserver. A remote Matrix user with malicious intent, sharing a room with Synapse instances before 1.105.1, can dispatch specially crafted events to exploit a weakness in the V2 state resolution algorithm. This can induce high CPU consumption and accumulate excessive data in the database of such instances, resulting in a denial of service. Servers in private federations, or those that do not federate, are not affected. Server administrators should upgrade to 1.105.1 or later. Some workarounds are available. One can ban the malicious users or ACL block servers from the rooms and/or leave the room and purge the room using the admin API.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 31, 2023Synapse is an open-source Matrix homeserver Prior to versions 1.95.1 and 1.96.0rc1, cached device information of remote users can be queried from Synapse.CVE-2023-43796 · Other software · matrix-org · reported by GitHubMedium 5.3
Synapse is an open-source Matrix homeserver Prior to versions 1.95.1 and 1.96.0rc1, cached device information of remote users can be queried from Synapse. This can be used to enumerate the remote users known to a homeserver. System administrators are encouraged to upgrade to Synapse 1.95.1 or 1.96.0rc1 to receive a patch. As a workaround, the `federation_domain_whitelist` can be used to limit federation traffic with a homeserver.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 10, 2023Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation.CVE-2023-45129 · Other software · matrix-org · reported by GitHubMedium 4.9
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Prior to version 1.94.0, a malicious server ACL event can impact performance temporarily or permanently leading to a persistent denial of service. Homeservers running on a closed federation (which presumably do not need to use server ACLs) are not affected. Server administrators are advised to upgrade to Synapse 1.94.0 or later. As a workaround, rooms with malicious server ACL events can be purged and blocked using the admin API.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 27, 2023Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation.CVE-2023-42453 · Other software · matrix-org · reported by GitHubLow 3.1
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Users were able to forge read receipts for any event (if they knew the room ID and event ID). Note that the users were not able to view the events, but simply mark it as read. This could be confusing as clients will show the event as read by the user, even if they are not in the room. This issue has been patched in version 1.93.0. Users are advised to upgrade. There are no known workarounds for this issue.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 27, 2023Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation.CVE-2023-41335 · Other software · matrix-org · reported by GitHubLow 3.7
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. When users update their passwords, the new credentials may be briefly held in the server database. While this doesn't grant the server any added capabilities—it already learns the users' passwords as part of the authentication process—it does disrupt the expectation that passwords won't be stored in the database. As a result, these passwords could inadvertently be captured in database backups for a longer duration. These temporarily stored passwords are automatically erased after a 48-hour window. This issue has been addressed in version 1.93.0. Users are advised to upgrade. There are no known workarounds for this issue.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 14, 2023Razer Synapse through 3.7.1209.121307 allows privilege escalation due to an unsafe installation path and improper privilege management.CVE-2022-47631 · Other software · Razer · reported by MITREHigh 7.8
Razer Synapse through 3.7.1209.121307 allows privilege escalation due to an unsafe installation path and improper privilege management. Attackers can place DLLs into %PROGRAMDATA%\Razer\Synapse3\Service\bin if they do so before the service is installed and if they deny write access for the SYSTEM user. Although the service will not start if it detects malicious DLLs in this directory, attackers can exploit a race condition and replace a valid DLL (i.e., a copy of a legitimate Razer DLL) with a malicious DLL after the service has already checked the file. As a result, local Windows users can abuse the Razer driver installer to obtain administrative privileges on Windows.
- Product
- Synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordpacketstormsecurity.comseclists.org
Jun 6, 2023Synapse is a Matrix protocol homeserver written in Python with the Twisted framework.CVE-2023-32683 · Other software · matrix-org · reported by GitHubLow 3.5
Synapse is a Matrix protocol homeserver written in Python with the Twisted framework. A discovered oEmbed or image URL can bypass the `url_preview_url_blacklist` setting potentially allowing server side request forgery or bypassing network policies. Impact is limited to IP addresses allowed by the `url_preview_ip_range_blacklist` setting (by default this only allows public IPs) and by the limited information returned to the client: 1. For discovered oEmbed URLs, any non-JSON response or a JSON response which includes non-oEmbed information is discarded. 2. For discovered image URLs, any non-image response is discarded. Systems which have URL preview disabled (via the `url_preview_enabled` setting) or have not configured a `url_preview_url_blacklist` are not affected. This issue has been addressed in version 1.85.0. Users are advised to upgrade. User unable to upgrade may also disable URL previews.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 6, 2023Synapse is a Matrix protocol homeserver written in Python with the Twisted framework.CVE-2023-32682 · Other software · matrix-org · reported by GitHubMedium 5.4
Synapse is a Matrix protocol homeserver written in Python with the Twisted framework. In affected versions it may be possible for a deactivated user to login when using uncommon configurations. This only applies if any of the following are true: 1. JSON Web Tokens are enabled for login via the `jwt_config.enabled` configuration setting. 2. The local password database is enabled via the `password_config.enabled` and `password_config.localdb_enabled` configuration settings *and* a user's password is updated via an admin API after a user is deactivated. Note that the local password database is enabled by default, but it is uncommon to set a user's password after they've been deactivated. Installations that are configured to only allow login via Single Sign-On (SSO) via CAS, SAML or OpenID Connect (OIDC); or via an external password provider (e.g. LDAP) are not affected. If not using JSON Web Tokens, ensure that deactivated users do not have a password set. This issue has been addressed in version 1.85.0. Users are advised to upgrade.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 26, 2023Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation.CVE-2023-32323 · Other software · matrix-org · reported by GitHubMedium 5
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. A malicious user on a Synapse homeserver X with permission to create certain state events can disable outbound federation from X to an arbitrary homeserver Y. Synapse instances with federation disabled are not affected. In versions of Synapse up to and including 1.73, Synapse did not limit the size of `invite_room_state`, meaning that it was possible to create an arbitrarily large invite event. Synapse 1.74 refuses to create oversized `invite_room_state` fields. Server operators should upgrade to Synapse 1.74 or newer urgently.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 26, 2023Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation.CVE-2022-39374 · Other software · matrix-org · reported by GitHubMedium 6.5
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. If Synapse and a malicious homeserver are both joined to the same room, the malicious homeserver can trick Synapse into accepting previously rejected events into its view of the current state of that room. This can be exploited in a way that causes all further messages and state changes sent in that room from the vulnerable homeserver to be rejected. This issue has been patched in version 1.68.0
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 26, 2023Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation.CVE-2022-39335 · Other software · matrix-org · reported by GitHubMedium 5
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix Federation API allows remote homeservers to request the authorization events in a room. This is necessary so that a homeserver receiving some events can validate that those events are legitimate and permitted in their room. However, in versions of Synapse up to and including 1.68.0, a Synapse homeserver answering a query for authorization events does not sufficiently check that the requesting server should be able to access them. The issue was patched in Synapse 1.69.0. Homeserver administrators are advised to upgrade.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 27, 2023Razer Synapse before 3.7.0830.081906 allows privilege escalation due to an unsafe installation path, improper privilege management, and improper certificate valCVE-2022-47632 · Other software · Razer · reported by MITREMedium 6.8
Razer Synapse before 3.7.0830.081906 allows privilege escalation due to an unsafe installation path, improper privilege management, and improper certificate validation. Attackers can place malicious DLLs into %PROGRAMDATA%\Razer\Synapse3\Service\bin if they do so before the service is installed and if they deny write access for the SYSTEM user. Although the service will not start if the malicious DLLs are unsigned, it suffices to use self-signed DLLs. The validity of the DLL signatures is not checked. As a result, local Windows users can abuse the Razer driver installer to obtain administrative privileges on Windows.
- Product
- Synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordpacketstormsecurity.compacketstormsecurity.com
Nov 22, 2022Synapse before 1.52.0 with URL preview functionality enabled will attempt to generate URL previews for media stream URLs without properly limiting connection tiCVE-2022-41952 · Other software · matrix-org · reported by GitHubMedium 6.5
Synapse before 1.52.0 with URL preview functionality enabled will attempt to generate URL previews for media stream URLs without properly limiting connection time. Connections will only be terminated after `max_spider_size` (default: 10M) bytes have been downloaded, which can in some cases lead to long-lived connections towards the streaming media server (for instance, Icecast). This can cause excessive traffic and connections toward such servers if their stream URL is, for example, posted to a large room with many Synapse instances with URL preview enabled. Version 1.52.0 implements a timeout mechanism which will terminate URL preview connections after 30 seconds. Since generating URL previews for media streams is not supported and always fails, 1.53.0 additionally implements an allow list for content types for which Synapse will even attempt to generate a URL preview. Upgrade to 1.53.0 to fully resolve the issue. As a workaround, turn off URL preview functionality by setting `url_preview_enabled: false` in the Synapse configuration file.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 2, 2022Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation.CVE-2022-31152 · Other software · matrix-org · reported by GitHubMedium 6.4
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix specification specifies a list of [event authorization rules](https://spec.matrix.org/v1.2/rooms/v9/#authorization-rules) which must be checked when determining if an event should be accepted into a room. In versions of Synapse up to and including version 1.61.0, some of these rules are not correctly applied. An attacker could craft events which would be accepted by Synapse but not a spec-conformant server, potentially causing divergence in the room state between servers. Administrators of homeservers with federation enabled are advised to upgrade to version 1.62.0 or higher. Federation can be disabled by setting [`federation_domain_whitelist`](https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#federation_domain_whitelist) to an empty list (`[]`) as a workaround.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 28, 2022Synapse is an open source home server implementation for the Matrix chat network.CVE-2022-31052 · Other software · matrix-org · reported by GitHubMedium 6.5
Synapse is an open source home server implementation for the Matrix chat network. In versions prior to 1.61.1 URL previews of some web pages can exhaust the available stack space for the Synapse process due to unbounded recursion. This is sometimes recoverable and leads to an error for the request causing the problem, but in other cases the Synapse process may crash altogether. It is possible to exploit this maliciously, either by malicious users on the homeserver, or by remote users sending URLs that a local user's client may automatically request a URL preview for. Remote users are not able to exploit this directly, because the URL preview endpoint is authenticated. Deployments with `url_preview_enabled: false` set in configuration are not affected. Deployments with `url_preview_enabled: true` set in configuration **are** affected. Deployments with no configuration value set for `url_preview_enabled` are not affected, because the default is `false`. Administrators of homeservers with URL previews enabled are advised to upgrade to v1.61.1 or higher. Users unable to upgrade should set `url_preview_enabled` to false.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 23, 2022Razer Synapse before 3.7.0228.022817 allows privilege escalation because it relies on %PROGRAMDATA%\Razer\Synapse3\Service\bin even if %PROGRAMDATA%\Razer has bCVE-2021-44226 · Other software · Razer · reported by MITREHigh 7.3
Razer Synapse before 3.7.0228.022817 allows privilege escalation because it relies on %PROGRAMDATA%\Razer\Synapse3\Service\bin even if %PROGRAMDATA%\Razer has been created by any unprivileged user before Synapse is installed. The unprivileged user may have placed Trojan horse DLLs there.
- Product
- Synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordpacketstormsecurity.compacketstormsecurity.com
Nov 23, 2021Synapse is a package for Matrix homeservers written in Python 3/Twisted.CVE-2021-41281 · Other software · matrix-org · reported by GitHubHigh 7.5
Synapse is a package for Matrix homeservers written in Python 3/Twisted. Prior to version 1.47.1, Synapse instances with the media repository enabled can be tricked into downloading a file from a remote server into an arbitrary directory. No authentication is required for the affected endpoint. The last 2 directories and file name of the path are chosen randomly by Synapse and cannot be controlled by an attacker, which limits the impact. Homeservers with the media repository disabled are unaffected. Homeservers with a federation whitelist are also unaffected, since Synapse will check the remote hostname, including the trailing `../`s, against the whitelist. Server administrators should upgrade to 1.47.1 or later. Server administrators using a reverse proxy could, at the expense of losing media functionality, may block the certain endpoints as a workaround. Alternatively, non-containerized deployments can be adapted to use the hardened systemd config.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 31, 2021Matrix is an ecosystem for open federated Instant Messaging and Voice over IP.CVE-2021-39164 · Other software · matrix-org · reported by GitHubLow 3.1
Matrix is an ecosystem for open federated Instant Messaging and Voice over IP. In versions 1.41.0 and prior, unauthorised users can access the membership (list of members, with their display names) of a room if they know the ID of the room. The vulnerability is limited to rooms with `shared` history visibility. Furthermore, the unauthorised user must be using an account on a vulnerable homeserver that is in the room. Server administrators should upgrade to 1.41.1 or later in order to receive the patch. One workaround is available. Administrators of servers that use a reverse proxy could, with potentially unacceptable loss of functionality, block the endpoints: `/_matrix/client/r0/rooms/{room_id}/members` with `at` query parameter, and `/_matrix/client/unstable/rooms/{room_id}/members` with `at` query parameter.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 31, 2021Matrix is an ecosystem for open federated Instant Messaging and Voice over IP.CVE-2021-39163 · Other software · matrix-org · reported by GitHubLow 3.1
Matrix is an ecosystem for open federated Instant Messaging and Voice over IP. In versions 1.41.0 and prior, unauthorised users can access the name, avatar, topic and number of members of a room if they know the ID of the room. This vulnerability is limited to homeservers where the vulnerable homeserver is in the room and untrusted users are permitted to create groups (communities). By default, only homeserver administrators can create groups. However, homeserver administrators can already access this information in the database or using the admin API. As a result, only homeservers where the configuration setting `enable_group_creation` has been set to `true` are impacted. Server administrators should upgrade to 1.41.1 or higher to patch the vulnerability. There are two potential workarounds. Server administrators can set `enable_group_creation` to `false` in their homeserver configuration (this is the default value) to prevent creation of groups by non-administrators. Administrators that are using a reverse proxy could, with partial loss of group functionality, block the endpoints `/_matrix/client/r0/groups/{group_id}/rooms` and `/_matrix/client/unstable/groups/{group_id}/rooms`.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 11, 2021Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse).CVE-2021-29471 · Other software · matrix-org · reported by GitHubLow 3.7
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.33.2 "Push rules" can specify conditions under which they will match, including `event_match`, which matches event content against a pattern including wildcards. Certain patterns can cause very poor performance in the matching engine, leading to a denial-of-service when processing moderate length events. The issue is patched in version 1.33.2. A potential workaround might be to prevent users from making custom push rules, by blocking such requests at a reverse-proxy.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 14, 2021Multiple system services installed alongside the Razer Synapse 3 software suite perform privileged operations on entries within the Razer Chroma SDK subkey.CVE-2021-30494 · Other software · Razer · reported by MITREMedium 5.5
Multiple system services installed alongside the Razer Synapse 3 software suite perform privileged operations on entries within the Razer Chroma SDK subkey. These privileged operations consist of file name concatenation of a runtime log file that is used to store runtime log information. In other words, an attacker can create a file in an unintended directory (with some limitations).
- Product
- Synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordversprite.comversprite.com
Apr 14, 2021Multiple system services installed alongside the Razer Synapse 3 software suite perform privileged operations on entries within the ChromaBroadcast subkey.CVE-2021-30493 · Other software · Razer · reported by MITREMedium 5.5
Multiple system services installed alongside the Razer Synapse 3 software suite perform privileged operations on entries within the ChromaBroadcast subkey. These privileged operations consist of file name concatenation of a runtime log file that is used to store runtime log information. In other words, an attacker can create a file in an unintended directory (with some limitations).
- Product
- Synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordversprite.comversprite.com
Apr 12, 2021Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse).CVE-2021-21393 · Other software · matrix-org · reported by GitHubMedium 5.3
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 Synapse is missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. Note that the groups feature is not part of the Matrix specification and the chosen maximum lengths are arbitrary. Not all clients might abide by them. Refer to referenced GitHub security advisory for additional details including workarounds.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 12, 2021Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse).CVE-2021-21392 · Other software · matrix-org · reported by GitHubMedium 6.3
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 requests to user provided domains were not restricted to external IP addresses when transitional IPv6 addresses were used. Outbound requests to federation, identity servers, when calculating the key validity for third-party invite events, sending push notifications, and generating URL previews are affected. This could cause Synapse to make requests to internal infrastructure on dual-stack networks. See referenced GitHub security advisory for details and workarounds.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 12, 2021Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse).CVE-2021-21394 · Other software · matrix-org · reported by GitHubMedium 5.3
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 Synapse is missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. Note that the groups feature is not part of the Matrix specification and the chosen maximum lengths are arbitrary. Not all clients might abide by them. Refer to referenced GitHub security advisory for additional details including workarounds.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 26, 2021Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse).CVE-2021-21333 · Other software · matrix-org · reported by GitHubMedium 6.1
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.27.0, the notification emails sent for notifications for missed messages or for an expiring account are subject to HTML injection. In the case of the notification for missed messages, this could allow an attacker to insert forged content into the email. The account expiry feature is not enabled by default and the HTML injection is not controllable by an attacker. This is fixed in version 1.27.0.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 26, 2021Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse).CVE-2021-21332 · Other software · matrix-org · reported by GitHubMedium 6.9
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.27.0, the password reset endpoint served via Synapse was vulnerable to cross-site scripting (XSS) attacks. The impact depends on the configuration of the domain that Synapse is deployed on, but may allow access to cookies and other browser data, CSRF vulnerabilities, and access to other resources served on the same domain or parent domains. This is fixed in version 1.27.0.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 26, 2021Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse).CVE-2021-21274 · Other software · matrix-org · reported by GitHubMedium 4.3
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.25.0, a malicious homeserver could redirect requests to their .well-known file to a large file. This can lead to a denial of service attack where homeservers will consume significantly more resources when requesting the .well-known file of a malicious homeserver. This affects any server which accepts federation requests from untrusted servers. Issue is resolved in version 1.25.0. As a workaround the `federation_domain_whitelist` setting can be used to restrict the homeservers communicated with over federation.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 26, 2021Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse).CVE-2021-21273 · Other software · matrix-org · reported by GitHubLow 3.1
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.25.0, requests to user provided domains were not restricted to external IP addresses when calculating the key validity for third-party invite events and sending push notifications. This could cause Synapse to make requests to internal infrastructure. The type of request was not controlled by the user, although limited modification of request bodies was possible. For the most thorough protection server administrators should remove the deprecated `federation_ip_range_blacklist` from their settings after upgrading to Synapse v1.25.0 which will result in Synapse using the improved default IP address restrictions. See the new `ip_range_blacklist` and `ip_range_whitelist` settings if more specific control is necessary.
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 9, 2020Matrix is an ecosystem for open federated Instant Messaging and VoIP.CVE-2020-26257 · Other software · matrix-org · reported by GitHubMedium 6.5
Matrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference "homeserver" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a `/send_join`, `/send_leave`, `/invite` or `/exchange_third_party_invite` request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers. The Matrix Synapse reference implementation before version 1.23.1 the implementation is vulnerable to this injection attack. Issue is fixed in version 1.23.1. As a workaround homeserver administrators could limit access to the federation API to trusted servers (for example via `federation_domain_whitelist`).
- Product
- synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Nov 23, 2020Matrix Synapse before 1.20.0 erroneously permits non-standard NaN, Infinity, and -Infinity JSON values in fields of m.room.member events, allowing remote attackCVE-2020-26890 · Other software · Matrix · reported by MITREHigh 7.5
Matrix Synapse before 1.20.0 erroneously permits non-standard NaN, Infinity, and -Infinity JSON values in fields of m.room.member events, allowing remote attackers to execute a denial of service attack against the federation and common Matrix clients. If such a malformed event is accepted into the room's state, the impact is long-lasting and is not fixed by an upgrade to a newer version, requiring the event to be manually redacted instead. Since events are replicated to servers of other room members, the impact is not constrained to the server of the event sender.
- Product
- Synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comlists.fedoraproject.org
Oct 19, 2020AuthRestServlet in Matrix Synapse before 1.21.0 is vulnerable to XSS due to unsafe interpolation of the session GET parameter.CVE-2020-26891 · Other software · Matrix · reported by MITREMedium 6.1
AuthRestServlet in Matrix Synapse before 1.21.0 is vulnerable to XSS due to unsafe interpolation of the session GET parameter. This allows a remote attacker to execute an XSS attack on the domain Synapse is hosted on, by supplying the victim user with a malicious URL to the /_matrix/client/r0/auth/*/fallback/web or /_matrix/client/unstable/auth/*/fallback/web Synapse endpoints.
- Product
- Synapse
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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