https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-05T22:46:04.870295+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2025-0239 CVE-2025-0239 — Alt-Svc ALPN validation failure when redirected 2026-10-05T22:46:04.871674+00:00

Affected: Mozilla Firefox, Mozilla Thunderbird

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.