CVE-2026-8950 Affecting firefox package, versions <0:140.11.0-1.el10_2


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.19% (10th percentile)

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  • Snyk IDSNYK-CENTOS10-FIREFOX-16792802
  • published22 May 2026
  • disclosed19 May 2026

Introduced: 19 May 2026

CVE-2026-8950  (opens in a new tab)

How to fix?

Upgrade Centos:10 firefox to version 0:140.11.0-1.el10_2 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:10 relevant fixed versions and status.

Same-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVSS Base Scores

version 3.1