CVE-2011-3744: Htmlpurifier Html Purifier

Medium severity, CVSS 5.0. EPSS: 1.4% chance of exploitation in the next 30 days.

HTML Purifier 4.2.0 allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation path in an error message, as demonstrated by tests/PHPT/Reporter/SimpleTest.php and certain other files.

Affected products

• Htmlpurifier Html Purifier: version 4.2.0 only

Published 2011-09-23. Last modified 2026-06-16.