curl: TLS session cache ignores CURLOPT_SSL_CTX_FUNCTION identity and resumes one client's session for another

Researcher: Maturi Jaswanth Sai Program: curl HackerOne Asset: github.com/curl/curl, lib/vtls/vtlsscache.c Affected: curl 8.21.0, 8.22.0 and 8.23.0 tag curl-8230, 2026-10-14, plus master eb2b201a 8.23.1-DEV, 2026-10-19 Weakness: CWE-295, wrong client identity on a resumed TLS session. Same class ...