CVE-2023-29200: Contao

Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days.

Contao is an open source content management system. Prior to versions 4.9.40, 4.13.21, and 5.1.4, logged in users can list arbitrary system files in the file manager by manipulating the Ajax request. However, it is not possible to read the contents of these files. Users should update to Contao 4.9.40, 4.13.21 or 5.1.4 to receive a patch. There are no known workarounds.

Affected products

• Contao Contao: from 2.0, before 4.9.40 (fixed in 4.9.40); from 4.10.0, before 4.13.21 (fixed in 4.13.21); from 5.0.0, before 5.1.4 (fixed in 5.1.4)

Published 2023-04-25. Last modified 2026-06-17.