CVE-2017-11143

7.5 highEPSS 6.8%

High (7.5) in php php. 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.

Severity

CVSS 3.0

7.5 high

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 6.8% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-31)
CWEs: CWE-416, CWE-502
Published: 2017-07-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

php:php

References

http://openwall.com/lists/oss-security/2017/07/10/6
http://php.net/ChangeLog-5.php
http://www.securityfocus.com/bid/99553
https://access.redhat.com/errata/RHSA-2018:1296
https://bugs.php.net/bug.php?id=74145

Check your stack JSON