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.
1,219 results · page 4 of 25
Aug 13, 2026Issue summary: When an OpenSSL QUIC server (Listener SSL object) processes valid QUIC Initial packets for unknown destination connection IDs, it can allocate anCVE-2026-14456 · Websites & servers · OpenSSL · reported by openssl-security@openssl.orgHigh 7.5
Issue summary: When an OpenSSL QUIC server (Listener SSL object) processes valid QUIC Initial packets for unknown destination connection IDs, it can allocate and queue new incoming channels without enforcing any limit. Impact summary: A remote peer that can make many Initial packets reach the server listener faster than the application accepts connections, can cause the memory allocated to store the per-channel state to grow without any limits, potentially making the QUIC listener unavailable and causing Denial of Service. CWE: CWE-770: Allocation of Resources Without Limits or Throttling Description: The function that handles inbound QUIC packets uses Connection-Id from the packet header to find an existing connection (QUIC channel). If no existing connection is found and the packet type is INITIAL, the function treats the packet as a new connection. It allocates a new channel object and inserts it into a queue where it waits to be accepted by the local application with SSL_accept(3ossl). The memory occupied by these initial channel objects may grow without bounds if the application is not able to call SSL_accept() frequently enough to serve these inbound connection requests.
- Product
- OpenSSL
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026In sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not.CVE-2026-73283 · Other software · OpenBSD · reported by MITRELow 2.5
In sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not.
- Product
- OpenSSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if a certain pair of remote-forwarding operations are concurrent.CVE-2026-73282 · Other software · OpenBSD · reported by MITREMedium 4.8
In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if a certain pair of remote-forwarding operations are concurrent.
- Product
- OpenSSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keyCVE-2026-73281 · Other software · OpenBSD · reported by MITRELow 3.5
In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys. This is caused by misinteraction between agent locking and the session-bind@openssh.com extension.
- Product
- OpenSSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 8, 2026Crypt::OpenSSL::PKCS12 versions before 1.98 for Perl allow a NULL pointer dereference in print_attribute via a zero length BMPSTRING attribute.CVE-2026-17510 · Other software · JONASBN · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441eHigh 7.5
Crypt::OpenSSL::PKCS12 versions before 1.98 for Perl allow a NULL pointer dereference in print_attribute via a zero length BMPSTRING attribute. print_attribute() sizes the destination buffer for a BMPSTRING attribute from its declared byte length with `Renew(*attribute, length, char)`. A zero length attribute makes that a zero size reallocation, which Perl implements as a free returning NULL, so the buffer pointer becomes NULL, the following `strncpy` copies nothing, and the caller dereferences NULL in the `strlen()` it passes to `newSVpvn()`. A zero length BMPSTRING is even length, so the ASN.1 decoder accepts it and the value reaches this code. The UTF8STRING, OCTET STRING and BIT STRING arms size on `length + 1` or `length * 4 + 1` and are unaffected. Any caller that passes an untrusted PKCS#12 file to info_as_hash() can crash the process. info() prints attribute values directly without sizing a buffer and is unaffected.
- Product
- Crypt::OpenSSL::PKCS12
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Aug 5, 2026Issue summary: A malicious TLS server can cause a memory leak in a TLS client that has enabled OCSP response checking by sending an OCSP response that contains CVE-2026-54876 · Websites & servers · OpenSSL · reported by openssl-security@openssl.orgHigh 7.5
Issue summary: A malicious TLS server can cause a memory leak in a TLS client that has enabled OCSP response checking by sending an OCSP response that contains no single response entries. Impact summary: An attacker can leak an attacker-tunable amount of memory per TLS handshake in a victim client application. A long-running client that repeatedly connects to a malicious server can have its memory exhausted, resulting in a Denial of Service. CWE: CWE-401: Missing Release of Memory after Effective Lifetime Description: The affected function is called during X.509 certificate chain verification when OCSP response checking is enabled with the X509_V_FLAG_OCSP_RESP_CHECK or X509_V_FLAG_OCSP_RESP_CHECK_ALL verification flags, for example when a TLS client verifies an OCSP response stapled into the TLS handshake by the server. When the received BasicOCSPResponse contains an empty SEQUENCE OF SingleResponse, which is permitted on the wire and accepted by the OpenSSL decoder, the OCSP_BASICRESP structure allocated by OCSP_response_get1_basic() was not freed because an early return bypassed the cleanup code at the end of the function. The amount of memory leaked per handshake can be am
- Product
- OpenSSL
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 5, 2026The plugin provides an Admin Search page that allows users with the `edit_posts` capability to run Relevanssi searches from the WordPress dashboard.CVE-2026-15941 · WordPress plugins & themes · reported by WordfenceMedium 6.5
The plugin provides an Admin Search page that allows users with the `edit_posts` capability to run Relevanssi searches from the WordPress dashboard. The AJAX handler accepts a URL-encoded `args` parameter, parses it into a `WP_Query`, and then passes user-controlled taxonomy query data into Relevanssi's taxonomy restriction builder. The taxonomy value is sanitized as text but is not parameterized for SQL before being interpolated into a term taxonomy lookup query. This allows an authenticated contributor-level attacker to inject SQL through the Admin Search AJAX request and execute time-based blind SQL injection against the WordPress database.
- What to do
- Update the plugin to the newest version.
Full record and what to do →NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Aug 3, 2026FirmaCheck for Windows before 1.3.16 contains a DLL hijacking vulnerability that allows local attackers to execute arbitrary code by placing a crafted openssl.cCVE-2026-41447 · Other software · Zucchetti S.p.a. · reported by VulnCheckHigh 8.5
FirmaCheck for Windows before 1.3.16 contains a DLL hijacking vulnerability that allows local attackers to execute arbitrary code by placing a crafted openssl.cnf file in the unvalidated C:\Program Files (x86)\Common Files\SSL\ directory path. Attackers can write a malicious OpenSSL configuration file referencing an attacker-controlled DLL to achieve code execution at startup process privilege level when FirmaCheck.exe runs automatically at system startup.
- Product
- FirmaCheck
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordvulncheck.comzucchetti.it
Jul 27, 2026Unauthenticated SQL Injection in Relevanssi Light <= 1.2.2 versions.CVE-2026-59533 · WordPress plugins & themes · reported by PatchstackCritical 9.3
Unauthenticated SQL Injection in Relevanssi Light <= 1.2.2 versions.
- Affected
- up to 1.2.2
- What to do
- Affects up to 1.2.2. Update the plugin to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Jul 27, 2026A vulnerability was determined in ZJONSSON node-unzipper up to 0.12.3.CVE-2026-17514 · Other software · ZJONSSON · reported by VulDBLow 1.9
A vulnerability was determined in ZJONSSON node-unzipper up to 0.12.3. Affected by this vulnerability is the function Extract of the file lib/extract.js. This manipulation causes path traversal. The attack requires local access. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.
- Product
- node-unzipper
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 24, 2026libssh2 through 1.11.1, fixed in commit a2ed82d, contains a pre-authentication integer underflow vulnerability in the ssh2_cipher_crypt() function in src/openssCVE-2026-66033 · Other software · libssh2 · reported by VulnCheckHigh 8.7
libssh2 through 1.11.1, fixed in commit a2ed82d, contains a pre-authentication integer underflow vulnerability in the ssh2_cipher_crypt() function in src/openssl.c that allows a malicious SSH server to crash any connecting client by negotiating AES-GCM ciphers during handshake. Attackers can exploit the underflow in the expression computing blocksize minus aadlen minus authentication tag length to trigger an out-of-bounds read and a memcpy call with a near-SIZE_MAX length argument, causing immediate process crash before any authentication occurs.
- Product
- libssh2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 23, 2026RRSIGs with too few labels can lead to bypass of DNSSEC wildcard validationCVE-2026-52688 · Other software · PowerDNS · reported by security@open-xchange.comHigh 7.5
RRSIGs with too few labels can lead to bypass of DNSSEC wildcard validation
- Product
- Recursor
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 23, 2026The issue is a DNSSEC validation bypass where wildcard expansion proofs (NSEC/NSEC3 records) are accepted without signature validation when the wildcard answer CVE-2026-52686 · Other software · PowerDNS · reported by security@open-xchange.comLow 3.7
The issue is a DNSSEC validation bypass where wildcard expansion proofs (NSEC/NSEC3 records) are accepted without signature validation when the wildcard answer is a CNAME or DNAME record.
- Product
- Recursor
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 22, 2026A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage.CVE-2026-11622 · Other software · ISC · reported by security-officer@isc.orgHigh 7.5
A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker needs to be able to send queries faster than the resolver can perform validation. The increased memory usage can be orders of magnitude beyond the limit configured in the `max-cache-size` parameter. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
- Product
- BIND 9
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddownloads.isc.orgdownloads.isc.org
Jul 22, 2026The issue is a resource exhaustion vulnerability associated with DNSSEC validation.CVE-2026-11605 · Other software · ISC · reported by security-officer@isc.orgHigh 7.5
The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to waste disproportionate CPU time. This issue affects BIND 9 versions 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, and 9.20.9-S1 through 9.20.24-S1.
- Product
- BIND 9
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recorddownloads.isc.orgdownloads.isc.org
Jul 22, 2026In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, a single client query for a deeply nested name under a DNSSEC-signed parent can cause Unbound to send mCVE-2026-50045 · Other software · NLnet Labs · reported by sep@nlnetlabs.nlMedium 5.3
In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, a single client query for a deeply nested name under a DNSSEC-signed parent can cause Unbound to send more upstream packets per client query than the configured 'max-global-quota'. This effectively bypasses a security configuration that limits upstream amplification traffic.
- Product
- Unbound
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 22, 2026In NLnet Labs Unbound 1.6.0 up to and including 1.25.1, a replay of a wildcard rrset as another piece of data, could be briefly considered DNSSEC secure based oCVE-2026-46582 · Other software · NLnet Labs · reported by sep@nlnetlabs.nlLow 3.7
In NLnet Labs Unbound 1.6.0 up to and including 1.25.1, a replay of a wildcard rrset as another piece of data, could be briefly considered DNSSEC secure based only on the RRSIG validation and stored into cache, before later validation treats it as bogus based on NSEC validation. When the resolving thread puts secure on the rrset, and another thread that is on the serve expired path then picks up the updated rrset contents with the secure status for a reply, it can be used to change a specific record, next to a wildcard that could be covered by the wildcard, into the wildcard. A malicious actor can exploit the possible poisonous effect by having any DNSSEC-singed domain (irrelevant to the victim domain) and a CNAME wrapper record that points to a record next to a wildcard (that could be covered by the wildcard). Then quering Unbound for the wildcard sibling record would seed the secure message. A later (after expiry) query for the CNAME wrapper would need to resolve the target sibling record. If the wildcard replay is injected into the response, the wildcard rrset will update the expired sibling record with a secure status before completing proper wildcard validation with NSEC recor
- Product
- Unbound
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 22, 2026In NLnet Labs Unbound 1.13.2 up to and including 1.25.1, stub or forward zones where the name is below an intermediate labed below a DNSSEC signed zone could beCVE-2026-44687 · Other software · NLnet Labs · reported by sep@nlnetlabs.nlLow 3.7
In NLnet Labs Unbound 1.13.2 up to and including 1.25.1, stub or forward zones where the name is below an intermediate labed below a DNSSEC signed zone could be shadowed by the intermediate label's secure NXDOMAIN answer from the parent. This is caused by an off-by-one error in 'harden-below-nxdomain' logic; enabled by default. It effectively bypasses the configuration and the configured stub/forward zone is never contacted. 'harden-below-nxdomain' does an upward DNS cache walk together with a delegation point guard that does not allow NXDOMAIN synthesis above stub/forward zones. The guard tests the domain name but before stripping a label. This results in an iteration where the domain name equals the configured stub/forward zone apex that passes the guard, strips one more label, and probes the cache at the apex's immediate public parent. If that parent has a cached DNSSEC-secure NXDOMAIN, which it will for any private namespace nested two or more labels under a signed public name, the walk returns it and the configured stub/forward upstream is never contacted. This can only be triggered by the query for the intermediate label (between the stub/forward apex and the DNSSEC parent zo
- Product
- Unbound
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 21, 2026Incorrect boundary conditions, integer overflow in the Libraries component in NSS.CVE-2026-16389 · Computers, phones & browsers · Mozilla · reported by security@mozilla.orgCritical 9.8
Incorrect boundary conditions, integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
- Product
- Firefox
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.mozilla.orgmozilla.org
Jul 17, 2026rust-openssl provides OpenSSL bindings for the Rust programming language.CVE-2026-45784 · Other software · rust-openssl · reported by GitHubMedium 5.1
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.50 until 0.10.80, CipherCtxRef::cipher_update_inplace in openssl/src/cipher_ctx.rs incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers EVP_aes_{128,192,256}_wrap_pad. For a non-multiple-of-8 input, OpenSSL writes up to 7 bytes past the end of the caller's buffer or Vec, producing attacker-controllable heap corruption when the plaintext length is attacker-influenced. This issue is fixed in version 0.10.80.
- Product
- rust-openssl
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 16, 2026The Janssen Project is an open-source identity and access management (IAM) platform.CVE-2026-45795 · Other software · JanssenProject · reported by GitHubMedium 5.3
The Janssen Project is an open-source identity and access management (IAM) platform. Prior to 2.0.0, jans-auth-server accepts unsigned JWE request objects because JwtAuthorizationRequest skips inner signature validation when jwe.getSignedJWTPayload() returns null, and AuthzRequestService.processRequestObject() does not reject the unrecognized RSA-OAEP algorithm when forceSignedRequestObject=true. This issue is fixed in version 2.0.0.
- Product
- jans
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 13, 2026Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow a heap out-of-bounds read via a long certificate extension OID in hv_exts.CVE-2026-58102 · Other software · JONASBN · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441eCritical 9.1
Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow a heap out-of-bounds read via a long certificate extension OID in hv_exts. When building the extension hash (via extensions(), extensions_by_long_name(), extensions_by_oid(), or has_extension_oid()), the code passes OBJ_obj2txt()'s return value as the hash-key length; because that value is the OID's full text length rather than the bytes written to the fixed-size buffer (129 bytes), an OID whose text is longer than the 129-byte buffer causes a read past the allocation, exposing adjacent heap memory as the returned hash key. extensions_by_name() uses the static shortname path and is not affected.
- Product
- Crypt::OpenSSL::X509
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Jul 13, 2026Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer dereference.CVE-2026-58101 · Other software · JONASBN · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441eHigh 7.5
Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer dereference. X509V3_EXT_d2i(ext) returns NULL when an extension's DER value fails to parse. basicC, ia5string, and auth_att dereference its result without a NULL check. keyid_data also dereferences akid->keyid, which is NULL for an empty AKI SEQUENCE (DER 30 00) even when the parse succeeds. A caller invoking an affected helper on an extension from an untrusted certificate triggers a SIGSEGV that crashes the Perl process.
- Product
- Crypt::OpenSSL::X509
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.commetacpan.org
Jul 9, 2026Argument Injection in bosh-cli allows a compromised BOSH Director to inject arbitrary OpenSSH options into the locally-spawned ssh process when an operator runsCVE-2026-47829 · Other software · CloudFoundry Foundation · reported by security@vmware.comHigh 7.7
Argument Injection in bosh-cli allows a compromised BOSH Director to inject arbitrary OpenSSH options into the locally-spawned ssh process when an operator runs bosh ssh -c, bosh logs -f, or other non-interactive SSH paths, leading to local command execution on the operator's workstation. Affected versions: bosh-cli versions prior to v7.10.4.
- Product
- bosh-cli
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 7, 2026ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange.CVE-2026-60002 · Other software · OpenBSD · reported by MITREHigh 7.7
ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange. (This outcome occurs only on the client side.)
- Product
- OpenSSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 7, 2026sshd in OpenSSH before 10.4 does not always honor the minimum authentication delay.CVE-2026-60001 · Other software · OpenBSD · reported by MITREMedium 6.5
sshd in OpenSSH before 10.4 does not always honor the minimum authentication delay.
- Product
- OpenSSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 7, 2026sshd in OpenSSH before 10.4 allows remote attackers to cause a denial of service (resource consumption from excessive authentication attempts) because MaxAuthTrCVE-2026-60000 · Other software · OpenBSD · reported by MITRELow 3.7
sshd in OpenSSH before 10.4 allows remote attackers to cause a denial of service (resource consumption from excessive authentication attempts) because MaxAuthTries was mishandled for GSSAPIAuthentication.
- Product
- OpenSSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 7, 2026In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.CVE-2026-59999 · Other software · OpenBSD · reported by MITREMedium 5.9
In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.
- Product
- OpenSSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 7, 2026sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory.CVE-2026-59998 · Other software · OpenBSD · reported by MITREMedium 4.8
sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory.
- Product
- OpenSSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 7, 2026internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would hCVE-2026-59997 · Other software · OpenBSD · reported by MITREMedium 4.2
internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended security properties of an SFTP connection.
- Product
- OpenSSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 7, 2026scp in OpenSSH before 10.4 may place a file in the parent directory of an intended directory when the copy occurs between two remote destinations.CVE-2026-59996 · Other software · OpenBSD · reported by MITREMedium 4.2
scp in OpenSSH before 10.4 may place a file in the parent directory of an intended directory when the copy occurs between two remote destinations.
- Product
- OpenSSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 7, 2026sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when "sftp server:/path ." is used with an attacker-controlled server.CVE-2026-59995 · Other software · OpenBSD · reported by MITREMedium 4.2
sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when "sftp server:/path ." is used with an attacker-controlled server.
- Product
- OpenSSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 3, 2026In PHP versions 8.2.* before 8.2.32, 8.3.* before 8.3.32, 8.4.* before 8.4.23, 8.5.* before 8.5.8, the AES-WRAP-PAD algorithm implementation in OpenSSL extensioCVE-2026-14355 · Websites & servers · php · reported by security@php.netMedium 5.6
In PHP versions 8.2.* before 8.2.32, 8.3.* before 8.3.32, 8.4.* before 8.4.23, 8.5.* before 8.5.8, the AES-WRAP-PAD algorithm implementation in OpenSSL extension contains a buffer allocation flaw. The output buffer for the AES key-wrap-with-padding operation is sized from the plaintext length without accounting for RFC 5649 expansion. This may cause OpenSSL to write beyond allocated memory, corrupting heap metadata and triggering application abort.
- Product
- php
- 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
Jun 26, 2026An issue in Technitium DNS Server v.14.3 and before allows a remote attacker to cause a denial of service via the DnsServerApp.exe, DnsServerApp.dll, TechnitiumCVE-2026-36478 · Other software · reported by MITREHigh 7.5
An issue in Technitium DNS Server v.14.3 and before allows a remote attacker to cause a denial of service via the DnsServerApp.exe, DnsServerApp.dll, TechnitiumLibrary.Net/Dns/DnsClient.cs components
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 25, 2026X.509 trust-chain bypass in the OpenSSL compatibility certificate verifier (wolfSSL_X509_verify_cert()).CVE-2026-11310 · Other software · wolfSSL · reported by facts@wolfssl.comHigh 8.7
X.509 trust-chain bypass in the OpenSSL compatibility certificate verifier (wolfSSL_X509_verify_cert()). This affects only builds with --enable-opensslextra (OPENSSL_EXTRA) and whose application validates certificates by calling X509_verify_cert() with caller-supplied untrusted intermediate certificates; for those users it is critical, otherwise the library is unaffected. In particular, native wolfSSL TLS/DTLS usage is not impacted. wolfSSL's X509_verify_cert() temporarily loads each caller-supplied untrusted intermediate into the certificate manager but failed to drop them before the trusted-store check, so an untrusted intermediate could anchor the path itself. An attacker can present a chain that never reaches a configured trust anchor and have it accepted, resulting in acceptance of an attacker-controlled certificate. This is certificate verification independent of TLS (e.g. S/MIME/CMS, code/firmware signing, JWT/JWS x5c), is not specific to any key type or algorithm, and a single untrusted intermediate suffices. The default wolfSSL TLS handshake (WOLFSSL_VERIFY_PEER) is not affected; only TLS applications doing manual or deferred peer verification through this API are, which a
- Product
- wolfSSL
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 25, 2026X.509 trust-chain bypass (path-depth exhaustion) in the OpenSSL compatibility certificate verifier (wolfSSL_X509_verify_cert()).CVE-2026-11999 · Other software · wolfSSL · reported by facts@wolfssl.comHigh 8.2
X.509 trust-chain bypass (path-depth exhaustion) in the OpenSSL compatibility certificate verifier (wolfSSL_X509_verify_cert()). This affects only builds with --enable-opensslextra whose application calls X509_verify_cert() with caller-supplied untrusted intermediates; for those users it is critical, otherwise the library is unaffected. Native wolfSSL TLS/DTLS usage is not impacted. X509_verify_cert() returned success based only on the last verified link rather than on reaching a trust anchor: when the supplied chain is deeper than the verifier's maximum path depth (default 100), path building runs out of depth while still walking untrusted intermediates and the chain is accepted even though it never reaches a configured trust anchor, allowing acceptance of an attacker-controlled certificate. The default TLS handshake (WOLFSSL_VERIFY_PEER) is not affected; only applications doing manual or deferred verification through this API are.
- Product
- wolfSSL
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 25, 2026Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fCVE-2026-52690 · Other software · PowerDNS · reported by security@open-xchange.comMedium 5.9
Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail.
- Product
- Recursor
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 23, 2026A flaw was found in OpenSSH.CVE-2026-55655 · Other software · Red Hat · reported by Red HatMedium 5
A flaw was found in OpenSSH. A local unprivileged attacker on a Linux client host can hijack client-side X11 forwarding connections. This is possible by pre-binding the preferred abstract X socket name when X11 forwarding is enabled and a local UNIX-domain X socket is used. A successful attack can compromise the confidentiality of forwarded X11 traffic, including sensitive window contents and input, and may allow some manipulation of the forwarded session.
- Product
- Red Hat Enterprise Linux 10
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaccess.redhat.comaccess.redhat.com
Jun 23, 2026A flaw was found in OpenSSH.CVE-2026-55654 · Other software · Red Hat · reported by Red HatLow 3.7
A flaw was found in OpenSSH. This vulnerability, a heap out-of-bounds read, occurs during the cleanup of GSSAPI (Generic Security Service Application Programming Interface) indicators when a trailing NULL termination is missing in the auth-indicators array. A remote attacker, under specific configurations involving GSSAPI authentication and a Kerberos environment, could exploit this to cause the SSH authentication path to crash or abort. This leads to a denial of service (DoS), impacting the availability of the SSH service.
- Product
- Red Hat Enterprise Linux 10
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaccess.redhat.comaccess.redhat.com
Jun 23, 2026A flaw was found in OpenSSH.CVE-2026-55653 · Other software · Red Hat · reported by Red HatMedium 4.3
A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS).
- Product
- Red Hat Enterprise Linux 10
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaccess.redhat.comaccess.redhat.com
Jun 19, 2026Crypt::OpenSSL::PKCS12 versions before 1.96 for Perl permits a heap OOB read in print_attribute UTF8STRING path.CVE-2026-9265 · Other software · JONASBN · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441eCritical 9.1
Crypt::OpenSSL::PKCS12 versions before 1.96 for Perl permits a heap OOB read in print_attribute UTF8STRING path. print_attribute() copies a UTF8STRING ASN.1 attribute value into a heap buffer sized exactly to its declared length via strncpy, leaving no NUL terminator. Downstream callers run strlen() on the result and pass the inflated length to newSVpvn(), copying attacker-influenced adjacent heap bytes into a Perl scalar.
- Product
- Crypt::OpenSSL::PKCS12
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 19, 2026The GridTime 3000 GNSS Time Server has an open redirect vulnerability in the password change form submission.CVE-2026-12622 · Other software · Microchip · reported by dc3f6da9-85b5-4a73-84a2-2ec90b40fca5Medium 5.3
The GridTime 3000 GNSS Time Server has an open redirect vulnerability in the password change form submission. This issue affects GridTime 3000: from 1.0r0.03 through 1.1r0.0.
- Product
- GridTime 3000
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 19, 2026The GridTime 3000 GNSS Time Server leaks the access token in the URL parameters of some endpoints.CVE-2026-12620 · Other software · Microchip · reported by dc3f6da9-85b5-4a73-84a2-2ec90b40fca5Medium 4.6
The GridTime 3000 GNSS Time Server leaks the access token in the URL parameters of some endpoints. This issue affects GridTime 3000: from 1.0r0.03 through 1.1r0.0.
- Product
- GridTime 3000
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 18, 2026Local privilege escalation by loading DLLs from a shared temporary directory in ANSSI’s DFIR-ORC, versions 10.2.7 and prior.CVE-2026-11958 · Other software · ANSSI · reported by cve-coordination@incibe.esHigh 7.3
Local privilege escalation by loading DLLs from a shared temporary directory in ANSSI’s DFIR-ORC, versions 10.2.7 and prior. An attacker with prior access to the system, can place a malicious DLL in C:\Windows\Temp and wait for the application to be executed. Because DFIR-ORC is extracted and executed from that location with administrative privileges, the malicious library can be loaded automatically, allowing the attacker to gain administrator privileges on the affected machine.
- Product
- DFIR-ORC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 16, 2026Incorrect boundary conditions in the Libraries component in NSS.CVE-2026-12318 · Computers, phones & browsers · Mozilla · reported by security@mozilla.orgHigh 7.3
Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
- Product
- Firefox
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.mozilla.orgmozilla.org
Jun 9, 2026Issue summary: When CMS password-based decryption (RFC 3211 / PWRI key unwrap) processes attacker-supplied CMS data, an attacker-chosen stream-mode KEK cipher cCVE-2026-9076 · Websites & servers · OpenSSL · reported by openssl-security@openssl.orgHigh 7.5
Issue summary: When CMS password-based decryption (RFC 3211 / PWRI key unwrap) processes attacker-supplied CMS data, an attacker-chosen stream-mode KEK cipher can trigger a heap out-of-bounds read in kek_unwrap_key(). Impact summary: A heap buffer over-read may trigger a crash which leads to Denial of Service for an application if the input buffer ends at a memory page boundary and the following page is unmapped. There is no information disclosure as the over-read bytes are not revealed to the attacker. The key unwrapping function performs a check-byte test as specified in the RFC that reads 7 bytes from a heap allocation that is based on the wrapped key length from the message. There is a minimum length check based on the block length of the wrapping cipher. However the cipher is selected from an OID carried in the attacker's PWRI keyEncryptionAlgorithm with no requirement that the cipher be a block cipher. When an attacker selects a stream-mode cipher the guard will be ineffective and the allocated buffer containing the unwrapped key can be too small to fit the check-bytes specified in the RFC and a buffer over-read can happen. Applications calling CMS_decrypt() or CMS_decrypt
- Product
- OpenSSL
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 9, 2026Issue summary: A signed integer overflow when sizing the destination buffer for Unicode output in ASN1_mbstring_ncopy() can lead to a heap buffer overflow.CVE-2026-7383 · Websites & servers · OpenSSL · reported by openssl-security@openssl.orgHigh 8.1
Issue summary: A signed integer overflow when sizing the destination buffer for Unicode output in ASN1_mbstring_ncopy() can lead to a heap buffer overflow. Impact summary: A heap buffer overflow may lead to a crash or possibly attacker controlled code execution or other undefined behaviour. In ASN1_mbstring_copy() and ASN1_mbstring_ncopy() the destination size for Unicode output is computed in a signed int: by left shift of the input character count for BMPSTRING (UTF-16) and UNIVERSALSTRING (UTF-32), and by summing per-character byte counts for UTF8STRING. The calculation overflows when the input reaches around 2^30 characters. In the worst case (UNIVERSALSTRING at 2^30 characters) the size wraps to zero, OPENSSL_malloc(1) is called, and the subsequent character copy writes several gigabytes past the one-byte allocation. X.509 certificate processing routes through ASN1_STRING_set_by_NID(), whose DIRSTRING_TYPE mask excludes UNIVERSALSTRING and whose per-NID size limits cap the input length; no network protocol or certificate-handling path in OpenSSL exercises the overflow. Triggering the bug requires an application that calls ASN1_mbstring_copy() or ASN1_mbstring_ncopy() direct
- Product
- OpenSSL
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 9, 2026Issue summary: A specially crafted PKCS#7 or S/MIME signed message could trigger a use-after-free during PKCS#7 signature verification.CVE-2026-45447 · Websites & servers · OpenSSL · reported by openssl-security@openssl.orgHigh 8.8
Issue summary: A specially crafted PKCS#7 or S/MIME signed message could trigger a use-after-free during PKCS#7 signature verification. Impact summary: A use-after-free may result in process crashes, heap corruption, or potentially remote code execution. When processing a PKCS#7 or S/MIME signed message, if the SignedData digestAlgorithms field is present as an empty ASN.1 SET, OpenSSL may incorrectly free a caller-owned BIO during PKCS7_verify(). A subsequent use of the BIO by the calling application results in a use-after-free condition. In the common case this occurs when the application later calls BIO_free() on the BIO originally passed to PKCS7_verify(). Depending on allocator behavior and application-specific BIO usage patterns, this may result in a crash or other memory corruption. In some application contexts this may potentially be exploitable for remote code execution. Applications that process PKCS#7 or S/MIME signed messages using OpenSSL PKCS#7 APIs may be affected. Applications using the CMS APIs for this processing are not affected. The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS m
- Product
- OpenSSL
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 9, 2026Issue summary: The implementations of AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) mishandle the authentication of AAD (Additional Authenticated Data) with an CVE-2026-45446 · Websites & servers · OpenSSL · reported by openssl-security@openssl.orgMedium 4.8
Issue summary: The implementations of AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) mishandle the authentication of AAD (Additional Authenticated Data) with an empty ciphertext allowing a forgery of such messages. Impact summary: An attacker can forge empty messages with arbitrary AAD to the victim's application using these ciphers. AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) are nonce-misuse-resistant AEAD modes: they accept a key, nonce, optional AAD (bytes that are authenticated but not encrypted), and plaintext, and produces ciphertext plus a 16-byte tag. On decrypt, `EVP_DecryptFinal_ex()` is documented to return success only if the tag is verified succesfully. In OpenSSL's provider implementation of these ciphers, the expected tag is computed only when decryption function is invoked with non-empty data. If the caller supplies AAD and then calls `EVP_DecryptFinal_ex()` without invocation of the ciphertext update, which can happen when the received ciphertext length is zero, the tag is never recalculated and still holds its all-zeros value. When AES-GCM-SIV is used, an attacker who sends arbitrary AAD, empty ciphertext, and all-zeros tag passes authentication under any ke
- Product
- OpenSSL
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 9, 2026Issue summary: When an application drives an AES-OCB context through the public EVP_Cipher() one-shot interface, the application-supplied initialisation vector CVE-2026-45445 · Websites & servers · OpenSSL · reported by openssl-security@openssl.orgHigh 7.5
Issue summary: When an application drives an AES-OCB context through the public EVP_Cipher() one-shot interface, the application-supplied initialisation vector (IV) is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV supplied by the caller, resulting in (key, nonce) reuse and loss of confidentiality. If the same code path is used to compute the authentication tag, the tag depends only on the (key, IV) pair and not on the plaintext or ciphertext, allowing universal forgery of arbitrary ciphertext from a single captured message. OpenSSL provides two ways to drive a cipher: the documented streaming interface (EVP_CipherUpdate / EVP_CipherFinal_ex) and a lower-level one-shot, EVP_Cipher(), whose documentation explicitly recommends against use by applications in favour of EVP_CipherUpdate() and EVP_CipherFinal_ex(). The OCB provider's streaming handler flushes the application-supplied IV into the OCB context before processing data; the one-shot handler did not. Every call to EVP_Cipher() on an AES-OCB context therefore ran with the all-zero key-derived offset state left by cipher initialisation, regard
- Product
- OpenSSL
- 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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