CVE-2025-14181

The SOAP HTTP client guards its response buffer growth with a check that relies on signed integer overflow, which is undefined behaviour and is not guaranteed to trigger. When the check is optimised away, a malicious SOAP server can make the client allocate a buffer far smaller than the data it then writes into it, producing a heap buffer overflow.

Score

CVSS 3.1 6.5 Medium

Status

Analyzed - security@php.net

Published

2026-09-25

Last modified

2026-10-23

Weaknesses

CWE-190

Affected products

• Php (Php)
• Php (Php Group)

References

• https://github.com/php/php-src/security/advisories/GHSA-cj93-vc83-wgqv