Vulnerability Database

319,897

Total vulnerabilities in the database

CVE-2026-0884

Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.

Published: Jan 13, 2026
Updated: Jan 16, 2026
CVE: CVE-2026-0884
Severity: Critical
Exploit:

CVSS v3:

Severity: Critical
Score: 9.8
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWEs:

CWE-416

Affected Software
References

Software	From	Fixed in
mozilla / firefox	-	140.7.0
mozilla / firefox	-	147.0
mozilla / thunderbird	-	140.7.0
mozilla / thunderbird	-	147.0

https://bugzilla.mozilla.org/show_bug.cgi?id=2003588
https://www.mozilla.org/security/advisories/mfsa2026-01/
https://www.mozilla.org/security/advisories/mfsa2026-03/
https://www.mozilla.org/security/advisories/mfsa2026-04/
https://www.mozilla.org/security/advisories/mfsa2026-05/

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