CVE-2026-91767

Published 25 September 2026 · tracked since 26 September 2026

Description

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 t

References

• NVD — National Vulnerability Database
• CVE.org record (MITRE)
• CISA Known Exploited Vulnerabilities catalog

Latest tracked vulnerabilities

• CVE-2026-101913
• CVE-2026-101910
• CVE-2026-101906
• CVE-2026-101907
• CVE-2026-101908
• CVE-2026-101909
• CVE-2026-101900
• CVE-2026-101901
• CVE-2026-101902
• CVE-2026-101903

→ Open the live CVE board · all tools