vulnerability
MFSA2025-01 Firefox: Security Vulnerabilities fixed in Firefox 134 (CVE-2025-0239)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:L/Au:N/C:N/I:P/A:N) | Jan 7, 2025 | Jan 8, 2025 | Aug 11, 2025 |
Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:P/A:N)
Published
Jan 7, 2025
Added
Jan 8, 2025
Modified
Aug 11, 2025
Description
When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6.
Solution
mozilla-firefox-upgrade-134_0
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