vulnerability
MFSA2025-54 Thunderbird: Security Vulnerabilities fixed in Thunderbird 140 (CVE-2025-6427)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:L/Au:N/C:C/I:C/A:N) | Jun 24, 2025 | Jul 3, 2025 | Aug 12, 2025 |
Severity
9
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:N)
Published
Jun 24, 2025
Added
Jul 3, 2025
Modified
Aug 12, 2025
Description
An attacker was able to bypass the `connect-src` directive of a Content Security Policy by manipulating subdocuments. This would have also hidden the connections from the Network tab in Devtools. This vulnerability affects Firefox < 140 and Thunderbird < 140.
Solution
mozilla-thunderbird-upgrade-140_0
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