CVE-2026-91767

phpopensslmatcheswildcardname in ext/openssl/xpssl.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...

CVE-2026-91769

PHP's OpenSSL stream peer verification checks the certificate's subjectAltName entries first and, whenever no entry matches, falls back to the Common Name. RFC 6125 requires the CN to be ignored once the certificate presents any service identity, so a certificate carrying a non-matching DNS SAN w...

UBUNTU-CVE-2026-17545

On Windows, PHP's filesystem and stream APIs do not reject reserved device names such as CON, PRN, AUX, NUL, COM1 to COM9, LPT1 to LPT9, CONIN$ and CONOUT$ when they appear as a component of a path. An attacker-controlled filename therefore reaches CreateFileW and opens a device instead of the...

CVE-2026-91767

A flaw was found in PHP. When validating secure connections using Transport Layer Security TLS, an error in how wildcard domain names in server certificates are verified can lead to an out-of-bounds memory read. A malicious server presenting a specially crafted certificate can exploit this issue...

CVE-2026-91766

A flaw was found in PHP. When following a redirect, the built-in HTTP Hypertext Transfer Protocol stream wrapper forwards sensitive request headers—such as authentication tokens and session cookies—unchanged, even when directed to a different host, port, or unencrypted connection. A malicious...

CVE-2026-17545

A flaw was found in PHP. When running on Windows environments, PHP's filesystem and stream handlers fail to reject reserved system device names in file paths. An attacker who can control file or stream paths can supply these reserved names to open system devices instead of standard files. This ca...

CVE-2026-91765

A flaw was found in PHP. An unauthenticated remote attacker could cause a Denial of Service DoS by sending a specially crafted request to an affected Simple Object Access Protocol SOAP server endpoint. Due to a lack of recursion depth limits when parsing deeply nested XML elements, processing suc...

CVE-2025-1218

A flaw was found in PHP. The MySQL Native Driver mysqlnd wire protocol parser fails to verify that an incoming packet contains enough bytes before reading its fields. A malicious or compromised database server can send a truncated packet, causing the client application to read past the buffer...

CVE-2026-6103

A flaw was found in PHP. An integer overflow vulnerability in the Phar extension occurs when parsing TAR archive headers containing excessively large size fields. An attacker can exploit this issue by supplying a specially crafted archive file to an application that processes TAR archives, causin...

CVE-2026-91769 TLS Hostname Verification Falls Back to CN After SAN Mismatch

PHP's OpenSSL stream peer verification checks the certificate's subjectAltName entries first and, whenever no entry matches, falls back to the Common Name. RFC 6125 requires the CN to be ignored once the certificate presents any service identity, so a certificate carrying a non-matching DNS SAN w...

EUVD-2026-87346

PHP's OpenSSL stream peer verification checks the certificate's subjectAltName entries first and, whenever no entry matches, falls back to the Common Name. RFC 6125 requires the CN to be ignored once the certificate presents any service identity, so a certificate carrying a non-matching DNS SAN w...

CVE-2026-91769

PHP's OpenSSL stream peer verification checks the certificate's subjectAltName entries first and, whenever no entry matches, falls back to the Common Name. RFC 6125 requires the CN to be ignored once the certificate presents any service identity, so a certificate carrying a non-matching DNS SAN w...

CVE-2026-91769 TLS Hostname Verification Falls Back to CN After SAN Mismatch

PHP's OpenSSL stream peer verification checks the certificate's subjectAltName entries first and, whenever no entry matches, falls back to the Common Name. RFC 6125 requires the CN to be ignored once the certificate presents any service identity, so a certificate carrying a non-matching DNS SAN w...

CVE-2026-91769

A flaw exists in PHP 's OpenSSL stream peer verification where the system improperly falls back to the Common Name (CN) if no Subject Alternative Name (SAN) matches the requested hostname. This violates RFC 6125 , as the CN should be ignored when service identities are present. An attacker could ...

EUVD-2026-87343

phpopensslmatcheswildcardname in ext/openssl/xpssl.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...

CVE-2026-91767 Heap-buffer-overflow in php_openssl_matches_wildcard_name on crafted server cert wildcard CN

phpopensslmatcheswildcardname in ext/openssl/xpssl.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...

CVE-2026-91767 Heap-buffer-overflow in php_openssl_matches_wildcard_name on crafted server cert wildcard CN

phpopensslmatcheswildcardname in ext/openssl/xpssl.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...

CVE-2026-91767

phpopensslmatcheswildcardname in ext/openssl/xpssl.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...

CVE-2026-91767

The PHP interpreter is vulnerable to a heap-buffer-overflow due to an integer underflow in the php_openssl_matches_wildcard_name() function located in ext/openssl/xp_ssl.c. The flaw occurs when a TLS server certificate provides a wildcard name whose literal characters are longer than the hostname...

CVE-2026-91767

phpopensslmatcheswildcardname in ext/openssl/xpssl.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...