CVEvulnerability
CVE-2025-5266
4.3 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2025-05-27
- Last modified
- 2026-10-05
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-200
Description
Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.
Affected configurations
• mozilla firefox (< 128.11.0)
• mozilla firefox (< 139.0)
Related
Weakness · CWE (1)
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1965628 Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2025-42/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-44/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-45/ www.mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2025-46/ www.mozilla.org
- https://lists.debian.org/debian-lts-announce/2025/05/msg00043.html lists.debian.org
- https://lists.debian.org/debian-lts-announce/2025/05/msg00046.html lists.debian.org