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CVE-2026-91767
MEDIUM(6.5)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Risk Signal Score21/100 — NIEDRIG
- CVSS 6.5 — Mittel
Erwähnungen (letzte 60 Tage)
Artikel
EPSS-Score
0.2%
Exploit-Wahrscheinlichkeit (30 Tage)
CVSS Score
6.5
Technische Schwere
Beschreibung
php_openssl_matches_wildcard_name() in ext/openssl/xp_ssl.c underflows the length argument passed to memchr() when a TLS server certificate presents a wildcard name whose literal characters are together longer than the hostname being verified. A malicious server presenting such a certificate makes the PHP client read up to SIZE_MAX bytes past the end of a heap allocation. The path is reachable from any default client stream, because verify_peer_name is enabled by default.