CVE-2016-4070: PHP

High severity, CVSS 7.5. EPSS: 5.7% chance of exploitation in the next 30 days.

Integer overflow in the php_raw_url_encode function in ext/standard/url.c in PHP before 5.5.34, 5.6.x before 5.6.20, and 7.x before 7.0.5 allows remote attackers to cause a denial of service (application crash) via a long string to the rawurlencode function. NOTE: the vendor says "Not sure if this qualifies as security issue (probably not).

Affected products

• PHP PHP: up to and including 5.5.33; 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 2016-05-20. Last modified 2026-06-17.