vulnerability
MFSA2025-63 Thunderbird: Security Vulnerabilities fixed in Thunderbird 140.1 (CVE-2025-8036)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:M/Au:N/C:C/I:C/A:N) | Jul 22, 2025 | Jul 23, 2025 | Feb 2, 2026 |
Severity
9
CVSS
(AV:N/AC:M/Au:N/C:C/I:C/A:N)
Published
Jul 22, 2025
Added
Jul 23, 2025
Modified
Feb 2, 2026
Description
Firefox cached CORS preflight responses across IP address changes. This allowed circumventing CORS with DNS rebinding. This vulnerability affects Firefox < 141, Firefox ESR < 140.1, Thunderbird < 141, and Thunderbird < 140.1.
Solution
mozilla-thunderbird-upgrade-140_1
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