CVE-2026-12184
Published:May 05, 2026
Updated:July 07, 2026
NULL pointer dereference in PHP: in ext/standard/http_fopen_wrapper.c (php_stream_url_wrap_http_ex), when php_stream_xport_crypto_setup fails while enabling TLS the stream is reset to NULL but the peer-name reset code then dereferences it. A remote server that fails TLS setup (expired cert, peer-name mismatch) can crash the process, causing a remote DoS of PHP-FPM worker pools.
Affected Packages
https://github.com/php/php-src.git (GITHUB):
Affected version(s) >=php-8.3.0 <php-8.3.32Fix Suggestion:
Update to version php-8.3.32https://github.com/php/php-src.git (GITHUB):
Affected version(s) >=php-8.5.0 <php-8.5.6Fix Suggestion:
Update to version php-8.5.6https://github.com/php/php-src.git (GITHUB):
Affected version(s) >=php-8.4.0 <php-8.4.21Fix Suggestion:
Update to version php-8.4.21Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH