CVE-2018-5712: Canonical Ubuntu Linux

Medium severity, CVSS 6.1. EPSS: 79.9% chance of exploitation in the next 30 days.

An issue was discovered in PHP before 5.6.33, 7.0.x before 7.0.27, 7.1.x before 7.1.13, and 7.2.x before 7.2.1. There is Reflected XSS on the PHAR 404 error page via the URI of a request for a .phar file.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 17.10 only
• Debian Debian Linux: version 7.0 only
• PHP PHP: up to and including 5.6.32; from 7.0.0, up to and including 7.0.26; after 7.1.0, up to and including 7.1.12; version 7.2.0 only

Published 2018-01-16. Last modified 2026-06-17.