tomcat: Client certificate verification bypass due to virtual host mapping

A certificate validation flaw has been found in Apache Tomcat. omcat did not validate that the host name provided via the SNI extension was the same as the host name provided in the HTTP host header field. If Tomcat was configured with more than one virtual host and the TLS configuration for one ...

Medium: tomcat-native

Issue Overview: CLIENTCERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat, Apache Tomcat Native. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M7 through 10.1.52, from 9.0.83 through 9.0.115;...

Medium: tomcat

Issue Overview: Inconsistent Interpretation of HTTP Requests 'HTTP Request/Response Smuggling' vulnerability in Apache Tomcat via invalid chunk extension. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M1 through 9.0.115, from 8.5.0...

Amazon Linux 2 : tomcat, --advisory ALAS2TOMCAT9-2026-025 (ALASTOMCAT9-2026-025)

The version of tomcat installed on the remote host is prior to 9.0.117-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2TOMCAT9-2026-025 advisory. Inconsistent Interpretation of HTTP Requests 'HTTP Request/Response Smuggling' vulnerability in Apache Tomcat via...

CVE-2026-41081

Improper Handling of TLS Client Authentication Failure Leading to Anonymous Principal Assignment in Apache Storm Versions Affected: up to 2.8.7 Description: When TLS transport is enabled in Apache Storm without requiring client certificate authentication the default configuration, the...

CVE-2026-41081 Apache Storm Client: Anonymous principal assigned on TLS client certificate verification failure

Improper Handling of TLS Client Authentication Failure Leading to Anonymous Principal Assignment in Apache Storm Versions Affected: up to 2.8.7 Description: When TLS transport is enabled in Apache Storm without requiring client certificate authentication the default configuration, the...

CVE-2026-41081 Apache Storm Client: Anonymous principal assigned on TLS client certificate verification failure

Improper Handling of TLS Client Authentication Failure Leading to Anonymous Principal Assignment in Apache Storm Versions Affected: up to 2.8.7 Description: When TLS transport is enabled in Apache Storm without requiring client certificate authentication the default configuration, the...

PT-2026-35414

Improper Handling of TLS Client Authentication Failure Leading to Anonymous Principal Assignment in Apache Storm Versions Affected: up to 2.8.7 Description: When TLS transport is enabled in Apache Storm without requiring client certificate authentication the default configuration, the...

Exploit for Improper Authentication in Apache Tomcat

CVE-2026-29145 Testing Environment 📌 Overview This reposi...

CLEANSTART-2026-IS05941 CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat, Apache Tomcat Native

Multiple security vulnerabilities affect the thingsboard package. CLIENTCERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat, Apache Tomcat Native. See references for individual vulnerability details...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: tomcat (UTSA-2026-014281)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-014281 advisory. Improper Input Validation vulnerability. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.14, from 10.1.0-M1 through 10.1.49, from 9.0.0-M1 through...

CLEANSTART-2026-AF45008 When multiple server blocks are configured to share the same IP address and port, an attacker can use session resumption to bypass client certificate authentication requirements on these servers

Multiple security vulnerabilities affect the nginx package. When multiple server blocks are configured to share the same IP address and port, an attacker can use session resumption to bypass client certificate authentication requirements on these servers. See references for individual vulnerabili...

Exploit for Improper Access Control in Fortinet Forticlientems

CVE-2026-35616 Author: wa6n3r | GitHubhttps://github...

OESA-2026-1970 tomcat security update

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process. Security Fixes: Inconsistent Interpretation of...

Apache Tomcat 10.1.22 < 10.1.54 multiple vulnerabilities

The version of Tomcat installed on the remote host is prior to 10.1.54. It is, therefore, affected by multiple vulnerabilities as referenced in the fixedinapachetomcat10.1.54security-10 advisory. - Insertion of Sensitive Information into Log File vulnerability in the cloud membership for clusteri...

Apache Tomcat 9.0.92 < 9.0.117 multiple vulnerabilities

The version of Tomcat installed on the remote host is prior to 9.0.117. It is, therefore, affected by multiple vulnerabilities as referenced in the fixedinapachetomcat9.0.117security-9 advisory. - Insertion of Sensitive Information into Log File vulnerability in the cloud membership for clusterin...

Apache Tomcat 10.1.50 < 10.1.53 multiple vulnerabilities

The version of Tomcat installed on the remote host is prior to 10.1.53. It is, therefore, affected by multiple vulnerabilities as referenced in the fixedinapachetomcat10.1.53security-10 advisory. - CLIENTCERT authentication does not fail as expected for some scenarios when soft fail is disabled...

CLEANSTART-2026-IY92636 During session resumption in crypto/tls, if the underlying Config has its ClientCAs or RootCAs fields mutated between the initial handshake and the resumed handshake, the resumed handshake may succ...

Multiple security vulnerabilities affect the percona-xtradb-cluster-operator package. During session resumption in crypto/tls, if the underlying Config has its ClientCAs or RootCAs fields mutated between the initial handshake and the resumed handshake, the resumed handshake may succeed when it...

tomcat: Client certificate verification bypass due to virtual host mapping

A certificate validation flaw has been found in Apache Tomcat. omcat did not validate that the host name provided via the SNI extension was the same as the host name provided in the HTTP host header field. If Tomcat was configured with more than one virtual host and the TLS configuration for one ...

Understanding Student Experiences with TLS Client Authentication

Mutual TLS mTLS provides strong, certificate-based authentication for both clients and servers, yet its adoption for user-facing websites remains rare. This paper presents a longitudinal study of mTLS usability, tracking 46 senior and graduate computer science students who configured client...