CVE-2018-19396: PHP

High severity, CVSS 7.5. EPSS: 4.6% chance of exploitation in the next 30 days.

ext/standard/var_unserializer.c in PHP 5.x through 7.1.24 allows attackers to cause a denial of service (application crash) via an unserialize call for the com, dotnet, or variant class.

Affected products

• PHP PHP: from 5.0.0, up to and including 7.1.24

Published 2018-11-20. Last modified 2026-06-17.