CVE-2023-4159: Omeka S

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

Unrestricted Upload of File with Dangerous Type in GitHub repository omeka/omeka-s prior to 4.0.3.

Affected products

• Omeka Omeka S: before 4.0.3 (fixed in 4.0.3)

Published 2023-08-04. Last modified 2026-06-17.