CVE-2003-1373: Phpbb Group Phpbb

Medium severity, CVSS 6.8. EPSS: 1.3% chance of exploitation in the next 30 days.

Directory traversal vulnerability in auth.php for PhpBB 1.4.0 through 1.4.4 allows remote attackers to read and include arbitrary files via .. (dot dot) sequences followed by NULL (%00) characters in CGI parameters, as demonstrated using the lang parameter in prefs.php.

Affected products

• Phpbb Group Phpbb: version 1.4.0 only; version 1.4.1 only; version 1.4.2 only; version 1.4.4 only

Published 2003-12-31. Last modified 2026-06-16.