Origin Validation Error Affecting firefox package, versions <0:140.17.0-1.el8_10


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.14% (4th percentile)

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  • Snyk IDSNYK-CENTOS8-FIREFOX-21493804
  • published23 Oct 2026
  • disclosed29 Sept 2026

Introduced: 29 Sep 2026

CVE-2026-100821  (opens in a new tab)
CWE-346  (opens in a new tab)

How to fix?

Upgrade Centos:8 firefox to version 0:140.17.0-1.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 Panning and Zooming component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

CVSS Base Scores

version 3.1