CVE-2018-10547: Canonical Ubuntu Linux

Medium severity, CVSS 6.1. EPSS: 3.4% chance of exploitation in the next 30 days.

An issue was discovered in ext/phar/phar_object.c in PHP before 5.6.36, 7.0.x before 7.0.30, 7.1.x before 7.1.17, and 7.2.x before 7.2.5. There is Reflected XSS on the PHAR 403 and 404 error pages via request data of a request for a .phar file. NOTE: this vulnerability exists because of an incomplete fix for CVE-2018-5712.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 17.10 only; version 18.04 only
• Debian Debian Linux: version 7.0 only; version 8.0 only; version 9.0 only
• Netapp Storage Automation Store: affected versions not specified
• PHP PHP: before 5.6.36 (fixed in 5.6.36); from 7.0.0, before 7.0.30 (fixed in 7.0.30); from 7.1.0, before 7.1.17 (fixed in 7.1.17); from 7.2.0, before 7.2.5 (fixed in 7.2.5)

Published 2018-04-29. Last modified 2026-06-17.