Improper Authentication

Overview org.apache.tomcat.embed:tomcat-embed-core is a Core Tomcat implementation. Affected versions of this package are vulnerable to Improper Authentication in processOCSPRequest, which is part of the the CLIENTCERT authentication process. In some "edge cases", an attacker can trigger a...

Improper Encoding or Escaping of Output

Overview org.apache.tomcat:tomcat-catalina is a Tomcat Servlet Engine Core Classes and Standard implementations. Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output in JsonAccessLogValve, which relies on an unescaped append in generating JSON logs. If...

Improper Authentication

Overview org.apache.tomcat:tomcat-coyote is a Tomcat Connectors and HTTP parser. Affected versions of this package are vulnerable to Improper Authentication in processOCSPRequest, which is part of the the CLIENTCERT authentication process. In some "edge cases", an attacker can trigger a soft-fail...

Improper Encoding or Escaping of Output

Overview org.apache.tomcat.embed:tomcat-embed-core is a Core Tomcat implementation. Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output in JsonAccessLogValve, which relies on an unescaped append in generating JSON logs. If non-default values are used for th...

Improper Authentication

Overview Affected versions of this package are vulnerable to Improper Authentication in processOCSPRequest, which is part of the the CLIENTCERT authentication process. An attacker can trigger a soft-fail of OCSP checks when soft-fail is disabled. Remediation Upgrade...

Improper Authentication

Overview org.apache.tomcat.embed:tomcat-embed-core is a Core Tomcat implementation. Affected versions of this package are vulnerable to Improper Authentication in processOCSPRequest, which is part of the the CLIENTCERT authentication process. An attacker can trigger a soft-fail of OCSP checks whe...

Security Bulletin: Due to the use of Apache Tomcat and mchange-commons-java, IBM ApplinX is vulnerable to Improper Input Validation vulnerablities (CVE-2025-66614, CVE-2026-24733, CVE-2026-24734) and an 'Injection' vulnerability (CVE-2026-27727).

Summary Due to the use of Apache Tomcat and mchange-commons-java, IBM ApplinX is vulnerable to Improper Input Validation vulnerablities CVE-2025-66614, CVE-2026-24733, CVE-2026-24734 and an Improper Neutralization of Special Elements in Output Used by a Downstream Component 'Injection'...

Exploit for CVE-2020-1938

CVE-2020-1938 Tomcat AJP Ghostcat Analysis This repository co...

CLEANSTART-2026-AJ47488 When using the RemoteIpFilter with requests received from a reverse proxy via HTTP that include the X-Forwarded-Proto header set to https, session cookies created by Apache Tomcat 11

Multiple security vulnerabilities affect the tomcat10 package. When using the RemoteIpFilter with requests received from a reverse proxy via HTTP that include the X-Forwarded-Proto header set to https, session cookies created by Apache Tomcat 11. See references for individual vulnerability detail...

tomcat: org.apache.tomcat/tomcat-catalina: Apache Tomcat: Directory traversal via rewrite with possible RCE

A directory traversal vulnerability in Apache Tomcat caused by improper URL normalization during request rewriting. When specific rewrite rules are used, an attacker could craft a malicious request to bypass access restrictions and reach protected directories such as /WEB-INF/ or /META-INF/. If...

tomcat: org.apache.tomcat/tomcat-catalina: Apache Tomcat: Denial of service

A denial of service flaw has been discovered in Apache Tomcat. If an error occurred including exceeding limits during the processing of a multipart upload, temporary copies of the uploaded parts written to disc were not cleaned up immediately but left for the garbage collection process to delete...

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...

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 ...

Important: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: tomcat11: tomcat11-11.0.21-0.1.hum1 noarch tomcat11-admin-webapps-11.0.21-0.1.hum1 noarch tomcat11-docs-webapp-11.0.21-0.1.hum1 noarch tomcat11-el-6.0-api-11.0.21-0.1.hum1 noarch...

tomcat: security constraint bypass with HTTP/0.9

A flaw was found in Tomcat. An improper input validation vulnerability allows an attacker to bypass security constraints. Specifically, if a security constraint is configured to permit HEAD requests to a URI but deny GET requests, a malformed or specification invalid HEAD request using the HTTP/0...

tomcat: Apache Tomcat: Certificate revocation bypass due to improper OCSP response validation

A flaw was found in Apache Tomcat. When an Online Certificate Status Protocol OCSP responder is used, the Tomcat Native component, and Tomcat's FFM port of the Tomcat Native code, does not properly verify or check the freshness of the OCSP response. This improper input validation vulnerability...

org.apache.tomcat/tomcat-juli: tomcat: Apache Tomcat: console manipulation

An improper input neutralization flaw has been discovered in Apache Tomcat. Tomcat did not escape ANSI escape sequences in log messages. If Tomcat was running in a console on a Windows operating system, and the console supported ANSI escape sequences, it was possible for an attacker to use a...

KLA90975 Multiple vulnerabilities in Apache Tomcat

Multiple vulnerabilities were found in Apache Tomcat. Malicious users can exploit these vulnerabilities to obtain sensitive information, bypass security restrictions. Below is a complete list of vulnerabilities: 1. Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve...

Security update for tomcat10 (important)

openSUSE security update: security update for tomcat10 ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:20444-1 Rating: important References: bsc1252753 bsc1252756 bsc1252905 bsc1253460 bsc1258371 bsc1258385 bsc1258387 Cross-References: CVE-2025-5575...

PT-2026-31711

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.20, 10.1.0-M1 through 10.1.53, and 9.0.40 through 9.0.116 Description A flaw exists within the JsonAccessLogValve component of Apache Tomcat related to improper encoding or escaping of output...