CVE-2026-8957 Affecting firefox package, versions <0:140.11.0-1.el9_8.alma.1


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.04% (14th percentile)

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  • Snyk IDSNYK-ALMALINUX9-FIREFOX-17098166
  • published30 May 2026
  • disclosed2 Jun 2026

Introduced: 30 May 2026

NewCVE-2026-8957  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 firefox to version 0:140.11.0-1.el9_8.alma.1 or higher.
This issue was patched in ALSA-2026:21378.

NVD Description

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

Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVSS Base Scores

version 3.1