CVE-2009-4421: Alexander Palmo Simple PHP Blog

Medium severity, CVSS 6.5. EPSS: 2% chance of exploitation in the next 30 days.

Directory traversal vulnerability in languages_cgi.php in Simple PHP Blog 0.5.1 and earlier allows remote authenticated users to include and execute arbitrary local files via a .. (dot dot) in the blog_language1 parameter.

Affected products

• Alexander Palmo Simple PHP Blog: up to and including 0.5.1; version 0.3.7c only; version 0.4.0 only; version 0.4.5 only; version 0.4.6 only; version 0.4.7 only; …

Published 2009-12-24. Last modified 2026-06-16.