CVE-2015-8835: PHP

Critical severity, CVSS 9.8. EPSS: 6.2% chance of exploitation in the next 30 days.

The make_http_soap_request function in ext/soap/php_http.c in PHP before 5.4.44, 5.5.x before 5.5.28, and 5.6.x before 5.6.12 does not properly retrieve keys, which allows remote attackers to cause a denial of service (NULL pointer dereference, type confusion, and application crash) or possibly execute arbitrary code via crafted serialized data representing a numerically indexed _cookies array, related to the SoapClient::__call method in ext/soap/soap.c.

Affected products

• PHP PHP: version 5.6.0 only; version 5.6.1 only; version 5.6.2 only; version 5.6.3 only; version 5.6.4 only; version 5.6.5 only; …

Published 2016-05-16. Last modified 2026-06-17.