CVE-2017-11143: PHP

High severity, CVSS 7.5. EPSS: 6.8% chance of exploitation in the next 30 days.

In PHP before 5.6.31, an invalid free in the WDDX deserialization of boolean parameters could be used by attackers able to inject XML for deserialization to crash the PHP interpreter, related to an invalid free for an empty boolean element in ext/wddx/wddx.c.

Affected products

• PHP PHP: up to and including 5.6.30

Published 2017-07-10. Last modified 2026-06-17.