Type conversion in PHP - CVE-2026-7258
Published: May 10, 2026
Vulnerability identifier: #VU130917
CSH Severity: Medium
CVSS v4.0: 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-2026-7258
CWE-ID: CWE-704
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PHP Group
Affected software:
PHP
PHP
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper type handling in ctype.h function calls when processing non-unsigned char values. A remote attacker can supply crafted input to cause a denial of service.
How to mitigate CVE-2026-7258
Install security update from vendor's website.