CVE-2026-87866 – When built with wolfSSL, curl can successfully validate a pinned public key hash against a

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.