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-2026-93348 HIGH 8.1
• CVE-2026-88808 HIGH 8.8
• CVE-2026-101861 MEDIUM 4.1
• CVE-2026-101079 LOW 2.8
• CVE-2026-93539 MEDIUM 5.4
• CVE-2026-96538
• CVE-2026-93537 MEDIUM 6.5
• CVE-2026-82929
• CVE-2026-82935
• CVE-2026-82323 HIGH 8.1

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