CVE-2026-2782 Affecting firefox package, versions <0:140.8.0-2.el9_7


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.28% (20th percentile)

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  • Snyk IDSNYK-CENTOS9-FIREFOX-15602845
  • published15 Mar 2026
  • disclosed24 Feb 2026

Introduced: 24 Feb 2026

CVE-2026-2782  (opens in a new tab)

How to fix?

Upgrade Centos:9 firefox to version 0:140.8.0-2.el9_7 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:9 relevant fixed versions and status.

Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS Base Scores

version 3.1