CVE-2026-84131 Affecting firefox package, versions <0:140.15.0-1.el8_10.alma.1


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.34% (25th percentile)

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  • Snyk IDSNYK-ALMALINUX8-FIREFOX-20075451
  • published24 Sept 2026
  • disclosed29 Sept 2026

Introduced: 24 Sep 2026

NewCVE-2026-84131  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 firefox to version 0:140.15.0-1.el8_10.alma.1 or higher.
This issue was patched in ALSA-2026:68549.

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:8 relevant fixed versions and status.

Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.

CVSS Base Scores

version 3.1