CVE-2008-3573: PHP-Nuke

Medium severity, CVSS 5.0. EPSS: 2% chance of exploitation in the next 30 days.

The CAPTCHA implementation in (1) Pligg 9.9.5 and possibly (2) Francisco Burzi PHP-Nuke 8.1 provides a critical random number (the ts_random value) within the URL in the SRC attribute of an IMG element, which allows remote attackers to pass the CAPTCHA test via a calculation that combines this value with the current date and the HTTP User-Agent string.

Affected products

• PHP-Nuke PHP-Nuke: version 8.1 only
• Pligg Pligg: version 9.9.5 only

Published 2008-08-10. Last modified 2026-06-16.