NULL pointer dereference in PHP - CVE-2026-7259

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Main Vulnerability Database Vulnerabilities #VU130910

NULL pointer dereference in PHP - CVE-2026-7259

Published: May 10, 2026


Vulnerability identifier: #VU130910
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-7259
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
PHP
Software vendor:
PHP Group

Description

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to a null pointer dereference in php_mb_check_encoding() when mb_ereg_search_init() processes crafted input. A remote attacker can supply crafted input to cause a denial of service.


Remediation

Install security update from vendor's website.

External links