CVEvulnerability
CVE-2026-8956
9.8 CRITICAL
Official page ↗
- Status
- Analyzed
- Published
- 2026-05-19
- Last modified
- 2026-10-14
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-190
Description
Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Affected configurations
• mozilla firefox (< 140.11.0)
• mozilla firefox (< 151.0.0)
• mozilla thunderbird (< 140.11)
• mozilla thunderbird (< 151.0.0)
Related
Weakness · CWE (1)
- CWE-190 Integer Overflow or Wraparound weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2032427 Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2026-46/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-48/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-50/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-51/ Vendor Advisory