CVE-2025-8036
HIGH severity · CVSS 8.1 · CWE-350
8.1CVSS HIGH
Summary
Thunderbird cached CORS preflight responses across IP address changes. This allowed circumventing CORS with DNS rebinding. This vulnerability was fixed in Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactNone
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://www.mozilla.org/security/advisories/mfsa2025-56/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-59/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-61/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-63/Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1960834
- https://www.kb.cert.org/vuls/id/652514