CVE-2023-4561: Omeka S

Medium severity, CVSS 4.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Cross-site Scripting (XSS) - Stored in GitHub repository omeka/omeka-s prior to 4.0.4.

Affected products

• Omeka Omeka S: before 4.0.4 (fixed in 4.0.4)

Published 2023-08-28. Last modified 2026-06-17.