CVE-2026-8962 Affecting firefox-debugsource package, versions <0:140.11.0-1.el10_2


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.37% (29th percentile)

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  • Snyk IDSNYK-ROCKY10-FIREFOXDEBUGSOURCE-17183011
  • published5 Jun 2026
  • disclosed19 May 2026

Introduced: 19 May 2026

CVE-2026-8962  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:10 firefox-debugsource to version 0:140.11.0-1.el10_2 or higher.
This issue was patched in RLSA-2026:21380.

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:10 relevant fixed versions and status.

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVSS Base Scores

version 3.1