CVE-2026-12313 Affecting firefox package, versions <0:140.12.0-1.el9_8.alma.1


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.18% (8th percentile)

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  • Snyk IDSNYK-ALMALINUX9-FIREFOX-17436330
  • published24 Jun 2026
  • disclosed22 Jun 2026

Introduced: 22 Jun 2026

CVE-2026-12313  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 firefox to version 0:140.12.0-1.el9_8.alma.1 or higher.
This issue was patched in ALSA-2026:27734.

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.

Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

CVSS Base Scores

version 3.1