Trust Boundary Violation Affecting firefox package, versions <0:140.13.0-1.el8_10


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.2% (11th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-CENTOS8-FIREFOX-18296537
  • published24 Jul 2026
  • disclosed21 Jul 2026

Introduced: 21 Jul 2026

NewCVE-2026-16387  (opens in a new tab)
CWE-501  (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.

Site isolation issue in the Networking component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

CVSS Base Scores

version 3.1