CVE-2026-0883 Affecting firefox package, versions <0:140.7.0-1.el9_2


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.43% (36th percentile)

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  • Snyk IDSNYK-RHEL9-FIREFOX-15512965
  • published13 Mar 2026
  • disclosed13 Jan 2026

Introduced: 13 Jan 2026

CVE-2026-0883  (opens in a new tab)

How to fix?

Upgrade RHEL:9 firefox to version 0:140.7.0-1.el9_2 or higher.
This issue was patched in RHSA-2026:2044.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

Information disclosure in the Networking component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

CVSS Base Scores

version 3.1