CVE-2023-4157: Omeka S

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

CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in GitHub repository omeka/omeka-s prior to version 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.