PT-2026-53741

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.22 Apache Tomcat versions 10.1.0-M1 through 10.1.55 Apache Tomcat versions 9.0.0.M1 through 9.0.118 Apache Tomcat versions 8.5.0 through 8.5.100 Description An incorrect control flow implementation...

Apache Tomcat: Apache Tomcat: Incorrect control flow in rewrite valve allows unexpected rule processing

A flaw was found in Apache Tomcat's rewrite valve. This vulnerability involves an incorrect control flow implementation where, during the processing of rewrite rules, if the first condition in an OR chain matched, subsequent non-OR conditions were unexpectedly skipped. This can lead to unintended...

Fixed in Apache Tomcat 11.0.23

Moderate: Security constraints for default servlet ignored method CVE-2026-55956 If security constraints were specified for the default servlet, any method or method omission configured as part of the constraint was ignored. This was fixed with commit 3f6bd2ba. This issue was reported to the Tomc...

Fixed in Apache Tomcat 10.1.56

Moderate: Security constraints for default servlet ignored method CVE-2026-55956 If security constraints were specified for the default servlet, any method or method omission configured as part of the constraint was ignored. This was fixed with commit 9c3b1efb. This issue was reported to the Tomc...

K000161597: Apache Tomcat vulnerability CVE-2026-34483

Security Advisory Description Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve component of Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.20, from 10.1.0-M1 through 10.1.53, from 9.0.40 through 9.0.116. Users are recommended to upgrade...

RLSA-2026:18537 Important: tomcat security update

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages JSP technologies. Security Fixes: tomcat: Apache Tomcat: Security constraint bypass for CGI scripts CVE-2025-46701 org.apache.tomcat/tomcat-catalina: tomcat: Apache Tomcat: session fixation via rewrite valve...

Apache Tomcat: Apache Tomcat: Open Redirect vulnerability via LoadBalancerDrainingValve

A flaw was found in Apache Tomcat. This open redirect vulnerability allows an attacker to redirect a user to an untrusted site. This occurs through the LoadBalancerDrainingValve, which can be exploited to manipulate URL redirection. The primary impact is that users may be unknowingly directed to...

Apache Tomcat: Apache Tomcat: Information disclosure due to improper encoding in JsonAccessLogValve

A flaw was found in the JsonAccessLogValve component of Apache Tomcat. This improper encoding or escaping of output vulnerability could allow an attacker to inject specially crafted data into log files. This could lead to information disclosure or other unintended consequences when the logs are...

Apache Tomcat: Apache Tomcat: Information disclosure due to improper encoding in JsonAccessLogValve

A flaw was found in the JsonAccessLogValve component of Apache Tomcat. This improper encoding or escaping of output vulnerability could allow an attacker to inject specially crafted data into log files. This could lead to information disclosure or other unintended consequences when the logs are...

Atlassian Confluence 8.9.0 < 9.2.20 / 9.3.1 < 10.2.11 (CONFSERVER-103708)

The version of Atlassian Confluence Server running on the remote host is affected by a vulnerability as referenced in the CONFSERVER-103708 advisory. - This Improper Encoding or Escaping of Output vulnerability allows an unauthenticated attacker to potentially disclose sensitive information via t...

Astra Linux – Vulnerability in Tomcat9

Occasional URL redirection to untrusted sites is a vulnerability in Apache Tomcat, caused by the LoadBalancerDrainingValve mechanism. This issue affects Apache Tomcat versions as follows: - 11.0.0-M1 through 11.0.18 - 10.1.0-M1 through 10.1.52 - 9.0.0.M23 through 9.0.115 - 8.5.30 through 8.5.100...

Astra Linux – Vulnerability in Tomcat9

A Session Fixation vulnerability exists in Apache Tomcat through the rewrite valve. This issue affects Apache Tomcat: versions from 11.0.0-M1 through 11.0.7, from 10.1.0-M1 through 10.1.41, and from 9.0.0.M1 through 9.0.105. Older, end-of-life versions may also be affected. Users are recommended ...

org.apache.tomcat/tomcat-catalina: tomcat: Apache Tomcat: session fixation via rewrite valve

A session fixation vulnerability has been identified in Apache Tomcat, affecting its rewrite functionality. If the rewrite valve is enabled for a web application, an attacker can craft a specific URL. If a victim clicks on this malicious URL, their subsequent interaction with the resource will...

Important: Red Hat Security Advisory: tomcat security update

An update for tomcat is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

org.apache.tomcat/tomcat-catalina: tomcat: Apache Tomcat: session fixation via rewrite valve

A session fixation vulnerability has been identified in Apache Tomcat, affecting its rewrite functionality. If the rewrite valve is enabled for a web application, an attacker can craft a specific URL. If a victim clicks on this malicious URL, their subsequent interaction with the resource will...

org.apache.tomcat/tomcat-catalina: tomcat: Apache Tomcat: session fixation via rewrite valve

A session fixation vulnerability has been identified in Apache Tomcat, affecting its rewrite functionality. If the rewrite valve is enabled for a web application, an attacker can craft a specific URL. If a victim clicks on this malicious URL, their subsequent interaction with the resource will...

Improper Encoding org.apache.tomcat:tomcat-catalina Dependency in Jira Software Data Center

This High severity Improper Encoding vulnerability known as CVE-2026-34483 was introduced in version 11.3.0. This Improper Encoding or Escaping of Output vulnerability, with a CVSS Score of 7.5 and a CVSS Vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N allows an unauthenticated attacker to...

Improper Encoding org.apache.tomcat:tomcat-catalina Dependency in Confluence Data Center

This High severity Improper Encoding vulnerability known as CVE-2026-34483 was introduced in versions 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0. This Improper Encoding or Escaping of Output vulnerability, with a CVSS Score of 7.5 and a CVSS Vector of...

Hackers Use Jenkins Access to Deploy DDoS Botnet Against Gaming Servers

A new campaign shows misconfigured Jenkins servers abused to deploy a DDoS botnet targeting gaming systems, with Valve Corporation infrastructure in focus...

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...