CVE-2021-26799: Omeka

Medium severity, CVSS 6.1. EPSS: 1% chance of exploitation in the next 30 days.

Cross Site Scripting (XSS) vulnerability in admin/files/edit in Omeka Classic <=2.7 allows remote attackers to inject arbitrary web script or HTML.

Affected products

• Omeka Omeka: up to and including 2.7

Published 2021-07-23. Last modified 2026-06-17.