Incorrect Privilege Assignment Affecting firefox package, versions <0:140.13.0-1.el8_10


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.24% (16th percentile)

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  • Snyk IDSNYK-CENTOS8-FIREFOX-18296604
  • published24 Jul 2026
  • disclosed21 Jul 2026

Introduced: 21 Jul 2026

NewCVE-2026-16396  (opens in a new tab)
CWE-266  (opens in a new tab)

How to fix?

Upgrade Centos:8 firefox to version 0:140.13.0-1.el8_10 or higher.

NVD Description

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

Privilege escalation in WebExtensions. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

CVSS Base Scores

version 3.1