Use After Free Affecting firefox-debugsource package, versions <0:140.8.0-2.el8_10


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.04% (13th percentile)

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  • Snyk IDSNYK-ROCKY8-FIREFOXDEBUGSOURCE-15361036
  • published27 Feb 2026
  • disclosed24 Feb 2026

Introduced: 24 Feb 2026

NewCVE-2026-2787  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 firefox-debugsource to version 0:140.8.0-2.el8_10 or higher.
This issue was patched in RLSA-2026:3338.

NVD Description

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

Use-after-free in the DOM: Window and Location component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

CVSS Base Scores

version 3.1