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.
16 results
Sep 28, 2026A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2.CVE-2026-101281 · Other software · Trusted Domain Project · reported by VulDBMedium 5.5
A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_sp2_find_mailfrom_domain of the file libopendmarc/opendmarc_spf.c of the component SPF Macro Handler. This manipulation causes improper authentication. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: c48a74c758677fc5272a73eff15ffdbf8afda1a6. Applying a patch is the recommended action to fix this issue.
- Product
- OpenDMARC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 28, 2026A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2.CVE-2026-101280 · Other software · Trusted Domain Project · reported by VulDBMedium 5.5
A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected is the function opendmarc_policy_query_dmarc of the component Multi-Record Set Handler. The manipulation results in authentication bypass by spoofing. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- Product
- OpenDMARC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 28, 2026A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2.CVE-2026-101279 · Other software · Trusted Domain Project · reported by VulDBMedium 5.5
A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. This impacts an unknown function of the file libopendmarc/opendmarc_policy.c of the component DMARC Parser. The manipulation of the argument pct leads to integer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- Product
- OpenDMARC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 28, 2026A weakness has been identified in Trusted Domain Project OpenDMARC up to 1.4.2.CVE-2026-101278 · Other software · Trusted Domain Project · reported by VulDBLow 2.1
A weakness has been identified in Trusted Domain Project OpenDMARC up to 1.4.2. This affects the function opendmarc_get_tld of the file libopendmarc/opendmarc_tld.c : of the component PSL Wildcard Handler. Executing a manipulation can lead to origin validation error. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
- Product
- OpenDMARC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 28, 2026A vulnerability was found in Trusted Domain Project OpenDMARC up to 1.4.2.CVE-2026-101017 · Other software · Trusted Domain Project · reported by VulDBMedium 5.5
A vulnerability was found in Trusted Domain Project OpenDMARC up to 1.4.2. This vulnerability affects the function strcasecmp in the library libopendmarc/opendmarc_policy.c. The manipulation results in handling of exceptional conditions. The attack can be executed remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
- Product
- OpenDMARC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 28, 2026A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2.CVE-2026-101016 · Other software · Trusted Domain Project · reported by VulDBMedium 5.5
A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2. This affects the function opendmarc_policy_parse_dmarc in the library libopendmarc/opendmarc_policy.c. The manipulation of the argument fo/rf/ri/pct/sp/adkim/aspf/rua/ruf leads to handling of exceptional conditions. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- Product
- OpenDMARC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 28, 2026A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2.CVE-2026-101015 · Other software · Trusted Domain Project · reported by VulDBMedium 5.5
A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this issue is some unknown functionality of the file policy.c of the component Domain Handler. Executing a manipulation can lead to improper validation of unsafe equivalence in input. The attack may be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- Product
- OpenDMARC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 28, 2026A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2.CVE-2026-101014 · Other software · Trusted Domain Project · reported by VulDBMedium 5.5
A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_util_cleanup in the library libopendmarc/opendmarc_util.c of the component DMARC Record Parser. Performing a manipulation results in off-by-one. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named b3b1da9264bc80324094a27c71e7369bdedc62ae. To fix this issue, it is recommended to deploy a patch.
- Product
- OpenDMARC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 27, 2026A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2.CVE-2026-100891 · Other software · Trusted Domain Project · reported by VulDBMedium 5.5
A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this issue is the function opendmarc_policy_query_dmarc in the library libopendmarc/opendmarc_policy.c of the component Internationalized Domain Name Handler. Such manipulation leads to encoding error. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- Product
- OpenDMARC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 27, 2026A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2.CVE-2026-100890 · Other software · Trusted Domain Project · reported by VulDBMedium 5.5
A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_spf_ipv6_explode in the library libopendmarc/opendmarc_spf.c of the component SPF Parser. This manipulation of the argument cp causes null pointer dereference. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- Product
- OpenDMARC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 26, 2024OpenDMARC 1.4.2 contains a null pointer dereference vulnerability in /OpenDMARC/libopendmarc/opendmarc_policy.c.CVE-2024-25768 · Other software · opendmarc · reported by MITREHigh 7.5
OpenDMARC 1.4.2 contains a null pointer dereference vulnerability in /OpenDMARC/libopendmarc/opendmarc_policy.c.
- Product
- opendmarc
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 10, 2021OpenDMARC 1.4.1 and 1.4.1.1 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a multi-value From header CVE-2021-34555 · Other software · Trusteddomain · reported by MITREHigh 7.5
OpenDMARC 1.4.1 and 1.4.1.1 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a multi-value From header field.
- Product
- Opendmarc
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 27, 2020OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 has improper null termination in the function opendmarc_xml_parse that can result in a one-byte heap overfCVE-2020-12460 · Other software · Trusteddomain · reported by MITRECritical 9.8
OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 has improper null termination in the function opendmarc_xml_parse that can result in a one-byte heap overflow in opendmarc_xml when parsing a specially crafted DMARC aggregate report. This can cause remote memory corruption when a '\0' byte overwrites the heap metadata of the next chunk and its PREV_INUSE flag.
- Product
- Opendmarc
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comlists.debian.org
Apr 27, 2020OpenDMARC through 1.3.2 and 1.4.x allows attacks that inject authentication results to provide false information about the domain that originated an e-mail messCVE-2020-12272 · Other software · Trusteddomain · reported by MITREMedium 5.3
OpenDMARC through 1.3.2 and 1.4.x allows attacks that inject authentication results to provide false information about the domain that originated an e-mail message. This is caused by incorrect parsing and interpretation of SPF/DKIM authentication results, as demonstrated by the example.net(.example.com substring.
- Product
- Opendmarc
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.debian.orglists.fedoraproject.org
Apr 27, 2020OpenDMARC through 1.3.2 and 1.4.x, when used with pypolicyd-spf 2.0.2, allows attacks that bypass SPF and DMARC authentication in situations where the HELO fielCVE-2019-20790 · Other software · Trusteddomain · reported by MITRECritical 9.8
OpenDMARC through 1.3.2 and 1.4.x, when used with pypolicyd-spf 2.0.2, allows attacks that bypass SPF and DMARC authentication in situations where the HELO field is inconsistent with the MAIL FROM field.
- Product
- Opendmarc
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugs.launchpad.netlists.fedoraproject.org
Sep 17, 2019OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 is prone to a signature-bypass vulnerability with multiple From: addresses, which might affect applicationCVE-2019-16378 · Other software · Trusteddomain · reported by MITRECritical 9.8
OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 is prone to a signature-bypass vulnerability with multiple From: addresses, which might affect applications that consider a domain name to be relevant to the origin of an e-mail message.
- Product
- Opendmarc
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordopenwall.combugs.debian.org
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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