ALPINE-CVE-2026-87866

ALPINE-CVE-2026-87866

This page contains facts from public vulnerability sources. Check the original advisory before updating.

When built with wolfSSL, curl can successfully validate a pinned public key hash against a key the TLS peer does not possess. During the TLS handshake, wolfSSL validates the connection, but curl's subsequent re-parsing of the same certificate - tricked by a manipulated validity length field - extracts and matches a different embedded key, incorrectly authorizing the pinned public key.

Fix available

Published

2026-10-20T21:17:20.833Z

Updated

2026-10-25T16:30:03.637870629Z

Stack: system

Check your server →