CVE-2006-1828: PHP121 Instant Messenger

Medium severity, CVSS 5.1. EPSS: 2.1% chance of exploitation in the next 30 days.

SQL injection vulnerability in php121language.php in PHP121 1.4 allows remote attackers to execute arbitrary SQL commands and execute arbitrary code via the sess_username variable, as set by the php121un HTTP COOKIE parameter, which is used in multiple files including php121login.php. NOTE: the code execution occurs because the SQL query results are used in an include statement.

Affected products

• PHP121 PHP121 Instant Messenger: up to and including 1.4

Published 2006-04-19. Last modified 2026-06-16.