CVE-2016-7398: PHP Ext-HTTP

Critical severity, CVSS 9.8. EPSS: 6.8% chance of exploitation in the next 30 days.

A type confusion vulnerability in the merge_param() function of php_http_params.c in PHP's pecl-http extension 3.1.0beta2 (PHP 7) and earlier as well as 2.6.0beta2 (PHP 5) and earlier allows attackers to crash PHP and possibly execute arbitrary code via crafted HTTP requests.

Affected products

• PHP Ext-HTTP: up to and including 2.5.6; from 3.0.0, up to and including 3.0.1; version 2.6.0 only; version 3.1.0 only

Published 2019-09-06. Last modified 2026-06-17.