Cross-site Scripting (XSS) Affecting firefox-x11 package, versions <0:140.5.0-1.el9_7


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.07% (21st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Cross-site Scripting (XSS) vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-CENTOS9-FIREFOXX11-13896587
  • published12 Nov 2025
  • disclosed11 Nov 2025

Introduced: 11 Nov 2025

NewCVE-2025-13013  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Centos:9 firefox-x11 to version 0:140.5.0-1.el9_7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-x11 package and not the firefox-x11 package as distributed by Centos. See How to fix? for Centos:9 relevant fixed versions and status.

Mitigation bypass in the DOM: Core & HTML component. This vulnerability affects Firefox < 145, Firefox ESR < 140.5, Firefox ESR < 115.30, Thunderbird < 145, and Thunderbird < 140.5.

CVSS Base Scores

version 3.1