CVE-2006-4450: Phpbb Group Phpbb

Medium severity, CVSS 5.1. EPSS: 4.2% chance of exploitation in the next 30 days.

usercp_avatar.php in PHPBB 2.0.20, when avatar uploading is enabled, allows remote attackers to use the server as a web proxy by submitting a URL to the avatarurl parameter, which is then used in an HTTP GET request.

Affected products

Published 2006-08-30. Last modified 2026-06-16.