CVE-2009-4412: s9y Serendipity

Medium severity, CVSS 6.0. EPSS: 1.9% chance of exploitation in the next 30 days.

Unrestricted file upload vulnerability in Serendipity before 1.5 allows remote authenticated users to execute arbitrary code by uploading a file with an executable extension followed by a safe extension, then accessing it via a direct request to the file in an unspecified directory. NOTE: some of these details are obtained from third party information.

Affected products

• s9y Serendipity: up to and including 1.5; version 0.3 only; version 0.4 only; version 0.5 only; version 0.6 only; version 0.7 only; …

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