CVE-2025-0239 (GCVE-0-2025-0239)
Vulnerability from cvelistv5
Published
2025-01-07 16:07
Modified
2025-11-03 22:33
Severity ?
4.0 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE
  • Alt-Svc ALPN validation failure when redirected
Summary
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.
References
Impacted products
Vendor Product Version
Mozilla Firefox Version: unspecified   < 134
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