CVE-2016-5094: PHP

High severity, CVSS 8.6. EPSS: 4.5% chance of exploitation in the next 30 days.

Integer overflow in the php_html_entities function in ext/standard/html.c in PHP before 5.5.36 and 5.6.x before 5.6.22 allows remote attackers to cause a denial of service or possibly have unspecified other impact by triggering a large output string from the htmlspecialchars function.

Affected products

• PHP PHP: up to and including 5.5.36; 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; …

Published 2016-08-07. Last modified 2026-06-17.