Mitigation bypass in the Add-ons Manager component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
History

Tue, 18 Aug 2026 22:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-285

Tue, 18 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 18 Aug 2026 19:00:00 +0000

Type Values Removed Values Added
Description Mitigation bypass in the Add-ons Manager component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1. Mitigation bypass in the Add-ons Manager component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
References

Tue, 18 Aug 2026 14:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Weaknesses CWE-285
Vendors & Products Mozilla
Mozilla firefox

Tue, 18 Aug 2026 12:45:00 +0000

Type Values Removed Values Added
Description Mitigation bypass in the Add-ons Manager component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.
Title Mitigation bypass in the Add-ons Manager component
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-08-18T18:55:42.007Z

Reserved: 2026-08-17T11:59:04.235Z

Link: CVE-2026-74979

cve-icon Vulnrichment

Updated: 2026-08-18T18:53:12.945Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-08-18T13:17:36.683

Modified: 2026-08-18T19:17:15.943

Link: CVE-2026-74979

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-18T22:15:04Z