LXD 6.10.0 Client Certificate Chain Authentication Bypass

Canonical LXD versions 4.0.14, 5.0.10, 5.21.8, and 6.9.0 through 6.10.0, along with affected MicroCloud releases, contain an authentication bypass through unverified client certificate chains. https://packetstorm.news/download/238890...

CVE-2026-33307

A flaw was found in modgnutls, a TLS module for Apache HTTPD. A remote attacker could exploit this vulnerability by sending a specially crafted client certificate chain to a server configured to use client certificates. This could lead to a buffer overflow due to the module not properly checking...

CVE-2026-33307 mod_gnutils has stack-based buffer overflow caused by a long client certificate chain

Modgnutls is a TLS module for Apache HTTPD based on GnuTLS. In versions prior to 0.12.3 and 0.13.0, code for client certificate verification imported the certificate chain sent by the client into a fixed size gnutlsx509crtt x509 array without checking the number of certificates is less than or...

EUVD-2026-14692

Modgnutls is a TLS module for Apache HTTPD based on GnuTLS. In versions prior to 0.12.3 and 0.13.0, code for client certificate verification imported the certificate chain sent by the client into a fixed size gnutlsx509crtt x509 array without checking the number of certificates is less than or...

CVE-2026-33307

Mod_gnutls (Apache HTTPD TLS module) is affected by CVE-2026-33307 in versions prior to 0.12.3 and 0.13.0. The vulnerability arises from importing the client certificate chain into a fixed-size gnutls_x509_crt_t x509[] array without validating the number of certificates against the array length, ...

PT-2026-27302

Name of the Vulnerable Software and Affected Versions Mod gnutls versions prior to 0.12.3 Mod gnutls versions prior to 0.13.0 Description Mod gnutls is a TLS module for Apache HTTPD based on GnuTLS. The software contains an issue where code for client certificate verification imports the...

EUVD-2023-1672

Malicious code in bioql PyPI...

CVE-2023-2422

CVE-2023-2422 describes an authentication flaw in Keycloak-based deployments where mTLS client certificate chain verification is insufficient. The vulnerability allows a client with a valid certificate to impersonate another client and access data belonging to that client. The issue is documented...

CVE-2023-2422

A flaw was found in Keycloak. A Keycloak server configured to support mTLS authentication for OAuth/OpenID clients does not properly verify the client certificate chain. A client that possesses a proper certificate can authorize itself as any other client, therefore, access data that belongs to...

Red Hat Keycloak Trust Management Vulnerabilities

Red Hat Keycloak is a suite of software from Red Hat, Inc. that provides authentication and management capabilities for modern applications and services. A security vulnerability exists in Red Hat Keycloak that stems from the server's inability to properly validate the client certificate chain...