CVEvulnerability
CVE-2025-0239
4.0 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2025-01-07
- Last modified
- 2026-10-05
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 4.0 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weaknesses
- CWE-295
Description
When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.
Affected configurations
• mozilla firefox (< 128.6.0)
• mozilla firefox (< 134.0)
• mozilla thunderbird (< 128.6.0)
• mozilla thunderbird (>= 129.0 < 134.0)
Related
Weakness · CWE (1)
- CWE-295 Improper Certificate Validation weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1929156 Issue Tracking, Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2025-01/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-02/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-04/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-05/ Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2025/01/msg00004.html lists.debian.org