GHSA-HFFM-G8V7-WRV7 Caddy: mTLS client authentication silently fails open when CA certificate file is missing or malformed

Summary Two swallowed errors in ClientAuthentication.provision cause mTLS client certificate authentication to silently fail open when a CA certificate file is missing, unreadable, or malformed. The server starts without error but accepts any client certificate signed by any system-trusted CA,...

Caddy: mTLS client authentication silently fails open when CA certificate file is missing or malformed

Summary Two swallowed errors in ClientAuthentication.provision cause mTLS client certificate authentication to silently fail open when a CA certificate file is missing, unreadable, or malformed. The server starts without error but accepts any client certificate signed by any system-trusted CA,...

UBUNTU-CVE-2026-27586

Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, two swallowed errors in ClientAuthentication.provision cause mTLS client certificate authentication to silently fail open when a CA certificate file is missing, unreadable, or malformed. The server starts...

CVE-2026-27586

Summary (CVE-2026-27586): Caddy prior to 2.11.1 has two swallowed errors in ClientAuthentication.provision() that cause mTLS client authentication to silently fail open when the CA certificate file is missing, unreadable, or malformed. The server starts and accepts client certs signed by any syst...

CVE-2026-27134

A flaw was found in Strimzi. When using a custom Cluster or Clients Certificate Authority CA with a multistage CA chain, Strimzi incorrectly configures the trusted certificates for mutual Transport Layer Security mTLS authentication. This allows users with certificates signed by any CA in the cha...

CVE-2026-27134

Summary of CVE-2026-27134 (Strimzi) : A flaw in Strimzi 0.49.0–0.50.0 causes misconfiguration of trusted certificates for mTLS when using a custom Cluster/Clients CA with a multistage CA chain. Consequently, all CAs in the chain are trusted and users with certificates signed by any CA in the chai...

CVE-2026-27134

Strimzi provides a way to run an Apache Kafka cluster on Kubernetes or OpenShift in various deployment configurations. In versions 0.49.0 through 0.50.0, when using a custom Cluster or Clients CA with a multistage CA chain consisting of multiple CAs, Strimzi incorrectly configures the trusted...

Improper Following of a Certificate's Chain of Trust

Overview Affected versions of this package are vulnerable to Improper Following of a Certificate's Chain of Trust in the mTLS user authentication with multiple CA certificates. An attacker can gain unauthorized access by presenting a certificate signed by any certificate authority in the provided...

Keylime Missing Authentication for Critical Function and Improper Authentication

Impact The Keylime registrar does not enforce mutual TLS mTLS client certificate authentication since version 7.12.0. The registrar's TLS context is configured with ssl.CERTOPTIONAL instead of ssl.CERTREQUIRED, allowing any client to connect to protected API endpoints without presenting a valid...

CVE-2025-59097

The CVE-2025-59097 issue affects the dormakaba exos 9300 configuration GUI used to push configurations to Access Managers (e.g., 92xx, 9230, 9290). When the user saves a configuration, the SOAP payload is sent to the selected Access Manager without authentication or authorization by default. Whil...

CVE-2019-20894

Traefik 2.x, in certain configurations, allows HTTPS sessions to proceed without mutual TLS verification in a situation where ERRBADSSLCLIENTAUTHCERT should have occurred...

CVE-2025-15346 wolfSSL Python library `CERT_REQUIRED` mode fails to enforce client certificate requirement

A vulnerability in the handling of verifymode = CERTREQUIRED in the wolfssl Python package wolfssl-py causes client certificate requirements to not be fully enforced. Because the WOLFSSLVERIFYFAILIFNOPEERCERT flag was not included, the behavior effectively matched CERTOPTIONAL: a peer certificate...

CVE-2025-15346 wolfSSL Python library `CERT_REQUIRED` mode fails to enforce client certificate requirement

A vulnerability in the handling of verifymode = CERTREQUIRED in the wolfssl Python package wolfssl-py causes client certificate requirements to not be fully enforced. Because the WOLFSSLVERIFYFAILIFNOPEERCERT flag was not included, the behavior effectively matched CERTOPTIONAL: a peer certificate...

EUVD-2025-201090

Envoy's TLS certificate matcher for matchtypedsubjectaltnames may incorrectly treat certificates containing an embedded null byte...

PT-2025-48980

Name of the Vulnerable Software and Affected Versions Envoy versions 1.33.12 through 1.36.2 Description Envoy’s mTLS certificate matcher for match typed subject alt names may incorrectly treat certificates containing an embedded null byte 0 inside an OTHERNAME SAN value as valid matches. This can...

CVE-2025-9312

A missing authentication enforcement vulnerability exists in the mutual TLS mTLS implementation used by System REST APIs and SOAP services in multiple WSO2 products. Due to improper validation of client certificate–based authentication in certain default configurations, the affected components ma...

CVE-2025-9312

A missing authentication enforcement vulnerability exists in the mutual TLS mTLS implementation used by System REST APIs and SOAP services in multiple WSO2 products. Due to improper validation of client certificate–based authentication in certain default configurations, the affected components ma...

CVE-2025-9312

CVE-2025-9312 relates to a missing authentication enforcement in WSO2 products’ mTLS implementation used by System REST APIs and SOAP services. The root cause is improper validation of client certificate–based authentication under certain default configurations, allowing unauthenticated requests ...

CVE-2025-9312 Improper Certificate-Based Authentication Enforcement in Multiple WSO2 Products

A missing authentication enforcement vulnerability exists in the mutual TLS mTLS implementation used by System REST APIs and SOAP services in multiple WSO2 products. Due to improper validation of client certificate–based authentication in certain default configurations, the affected components ma...

CVE-2025-64432

KubeVirt is a virtual machine management add-on for Kubernetes. Versions 1.5.3 and below, and 1.6.0 contained a flawed implementation of the Kubernetes aggregation layer's authentication flow which could enable bypass of RBAC controls. It was discovered that the virt-api component fails to...