← CVE Intelligence

CVE-2025-0239

Alt-Svc ALPN validation failure when redirected PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Mozilla / Firefoxunaffected 128.6 through 128.*; unaffected 134 through *
Mozilla / Thunderbirdunaffected 128.6 through 128.*; unaffected 134 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.