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Red Hat Security Advisory: tomcat9 security update

0
High
Published: 05/19/2026 (05/19/2026, 09:00:26 UTC)
Source: GCVE Database
Vendor/Project: Red Hat Product Security
Product: Red Hat

Description

Red Hat has issued a security advisory for tomcat9 in Red Hat Enterprise Linux 10 addressing three vulnerabilities: a security constraint bypass for CGI scripts (CVE-2025-46701), session fixation via the rewrite valve (CVE-2025-55668), and console manipulation (CVE-2025-55754). These vulnerabilities affect the Apache Tomcat servlet container used for Java Servlet and JavaServer Pages technologies. The update is rated as important by Red Hat Product Security and applies to tomcat9 packages in RHEL 10. A security update is available to remediate these issues.

Affected software

Affected versions
=9.0.110-2.el10_2

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 06/28/2026, 00:33:22 UTC

Technical Analysis

This advisory covers three security vulnerabilities in Apache Tomcat 9 as packaged in Red Hat Enterprise Linux 10. CVE-2025-46701 involves a security constraint bypass affecting CGI scripts. CVE-2025-55668 is a session fixation vulnerability via the rewrite valve component. CVE-2025-55754 concerns console manipulation issues in the tomcat-juli component. Red Hat has released an updated tomcat9 package (version 9.0.110-2.el10_2) that addresses these vulnerabilities. The advisory references Red Hat Enterprise Linux 10 Release Notes for additional changes and provides links for applying the update. No CVSS scores are provided in the advisory, but the update is rated as important.

Potential Impact

Successful exploitation of these vulnerabilities could allow an attacker to bypass security constraints on CGI scripts, fixate sessions via the rewrite valve potentially leading to session hijacking, or manipulate the console, which could impact the integrity and security of the Tomcat server environment. These issues affect the security posture of applications running on the affected Tomcat version in Red Hat Enterprise Linux 10.

Mitigation Recommendations

A security update for tomcat9 is available for Red Hat Enterprise Linux 10 and should be applied to affected systems. The updated package version is 9.0.110-2.el10_2. Administrators should follow Red Hat's official guidance for applying this update as detailed in the advisory and linked articles. No additional mitigation steps are indicated beyond applying the provided update.

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Technical Details

Gcve Source
db.gcve.eu
Csaf Category
csaf_security_advisory
Csaf Version
2.0
Publisher
Red Hat Product Security
Advisory Id
RHSA-2026:18536
Cve Count
3
Additional Cves
["CVE-2025-55668","CVE-2025-55754"]
Cvss Version
null

Threat ID: 6a18be67e29bf47b50386ea8

Added to database: 05/28/2026, 22:15:03 UTC

Last enriched: 06/28/2026, 00:33:22 UTC

Last updated: 07/31/2026, 19:22:55 UTC

Views: 147

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