CVE-2026-16837: Uncontrolled Resource Consumption

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to improper handling of a missing SSL client certificate...

PT-2026-78599

Name of the Vulnerable Software and Affected Versions IBM AIX versions 7.2 and 7.3 IBM PowerVM VIOS version 4.1 Description A remote attacker can cause a denial of service due to the improper handling of a missing SSL client certificate. SSL Secure Sockets Layer is a protocol used to establish...

JLSEC-2026-1338

libcurl-using applications can ask for a specific client certificate to be used in a transfer. This is done with the CURLOPTSSLCERT option --cert with the command line tool.When libcurl is built to use the macOS native TLS library Secure Transport, an application can ask for the client certificat...

CVE-2026-74882

openssl_encrypt versions before 1.4.0 ship with an insecure default in its IntegrityProxyConfig trusted_proxies that trusts the entire RFC 1918 private address space. This allows attackers on private networks to forge client certificate headers and bypass mTLS authentication when ProxyAuth valida...

CVE-2026-74882

opensslencrypt versions before 1.4.0 contain an insecure default configuration that trusts the entire RFC 1918 private address space in IntegrityProxyConfig trustedproxies. Attackers on private networks can forge client certificate headers to bypass mTLS authentication when ProxyAuth validation i...

PT-2026-82635

libcurl-using applications can ask for a specific client certificate to be used in a transfer. This is done with the CURLOPT SSLCERT option --cert with the command line tool.When libcurl is built to use the macOS native TLS library Secure Transport, an application can ask for the client certifica...

PT-2026-73407

A flaw in Node.js HTTPS Agent connection reuse can cause PFX object-array key collisions, allowing mutual TLS mTLS client identities to be reused across requests configured with different client certificates. This vulnerability affects Node.js 26.x, 24.x, and 22.x...

CVE-2026-18703

An issue in MongoDB Server could allow a party with a valid client certificate and a corresponding user account to authenticate using a certificate-based authentication method, even when an administrator has configured the server to restrict authentication to other mechanisms. This could allow...

UBUNTU-CVE-2026-18703

An issue in MongoDB Server could allow a party with a valid client certificate and a corresponding user account to authenticate using a certificate-based authentication method, even when an administrator has configured the server to restrict authentication to other mechanisms. This could allow...

CVE-2026-66760

SAP Approuter does not correctly validate client certificates in certain callback flows. An attacker with low privileges, holding a certificate from the same trusted authority with matching subject values, could bypass the identity check. This complexity makes the attack difficult to execute...

CVE-2026-66760

Technical details about CVE-2026-66760 are not publicly available in the provided documents beyond what is described in the Initial Description; monitor for updates.

EUVD-2026-55878

SAP Approuter does not correctly validate client certificates in certain callback flows. An attacker with low privileges, holding a certificate from the same trusted authority with matching subject values, could bypass the identity check. This complexity makes the attack difficult to execute...

JLSEC-2026-1217 libcurl would reuse a previously created connection even when some mTLS config related option had...

libcurl would reuse a previously created connection even when some mTLS config related option had been changed that should have prohibited reuse. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, some TLS...

CVE-2026-67294

A flaw was found in FreeRDP. During client-side server Transport Layer Security TLS authentication, FreeRDP improperly validates the Extended Key Usage EKU purpose of the peer certificate. This vulnerability allows a certificate intended only for client authentication to be accepted as a server...

UBUNTU-CVE-2026-67294

FreeRDP before 3.29.0 improperly validates the Extended Key Usage EKU purpose of the peer certificate during client-side server TLS authentication. In x509utilsverify, when server-purpose X509PURPOSESSLSERVER verification fails, the code falls back to client-purpose and any-purpose verification, ...

PT-2026-67274

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.29.0 Description Improper validation of the Extended Key Usage EKU purpose occurs during client-side server TLS authentication. Within the x509 utils verify function, if the server-purpose X509 PURPOSE SSL SERVER...

SUSE CVE-2026-6720

When calicoctl is invoked with --log-level=info or --log-level=debug, the client prints the full contents of its loaded connection-configuration struct to stderr in a single log line. The struct embeds every credential calicoctl uses to talk to the cluster - inline kubeconfig with bearer token,...

SUSE CVE-2026-7776

Boundary Community Edition and Boundary Enterprise “Boundary” workers are vulnerable to a denial-of-service condition during node enrollment TLS handshakes. An attacker with network access to the worker authentication listener may open a connection and delay or withhold the client certificate...

EUVD-2026-47794

When PROXY protocol v2 is used on the Unix domain socket path, roles derived from X.509 client certificates may not be validated against the configured tlsCATrusts allow-list. This can result in unintended role assignments following MONGODB-X509 authentication. Affected scenarios require local...

CVE-2026-13067 tlsCATrusts Role Restriction Not Enforced via PROXY Protocol v2 on Unix Domain Socket

When PROXY protocol v2 is used on the Unix domain socket path, roles derived from X.509 client certificates may not be validated against the configured tlsCATrusts allow-list. This can result in unintended role assignments following MONGODB-X509 authentication. Affected scenarios require local...