Cross-site Scripting (XSS) Affecting firefox package, versions <0:140.5.0-1.el8_8


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (13th percentile)

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  • Snyk IDSNYK-RHEL8-FIREFOX-14155291
  • published1 Dec 2025
  • disclosed11 Nov 2025

Introduced: 11 Nov 2025

NewCVE-2025-13018  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade RHEL:8 firefox to version 0:140.5.0-1.el8_8 or higher.
This issue was patched in RHSA-2025:22372.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

Mitigation bypass in the DOM: Security component. This vulnerability affects Firefox < 145, Firefox ESR < 140.5, Thunderbird < 145, and Thunderbird < 140.5.

CVSS Base Scores

version 3.1