Security Advisory

CVE-2025-0239

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-01-07 16:07:06

Last updated 2026-04-13 14:30:01

Assigner mozilla

State PUBLISHED

Description

When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.

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