Improperly Implemented Security Check for Standard Affecting thunderbird-debugsource package, versions <0:140.11.0-1.el10_0


Severity

Recommended
0.0
low
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.37% (29th percentile)

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  • Snyk IDSNYK-RHEL10-THUNDERBIRDDEBUGSOURCE-17369986
  • published18 Jun 2026
  • disclosed19 May 2026

Introduced: 19 May 2026

CVE-2026-8962  (opens in a new tab)
CWE-358  (opens in a new tab)

How to fix?

Upgrade RHEL:10 thunderbird-debugsource to version 0:140.11.0-1.el10_0 or higher.
This issue was patched in RHSA-2026:26539.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird-debugsource package and not the thunderbird-debugsource package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVSS Base Scores

version 3.1