CVE-2021-23929: Open-Xchange Appsuite

Medium severity, CVSS 6.1. EPSS: 1.1% chance of exploitation in the next 30 days.

OX App Suite through 7.10.4 allows XSS via a crafted Content-Disposition header in an uploaded HTML document to an ajax/share/<share-token>?delivery=view URI.

Affected products

• Open-Xchange Open-Xchange Appsuite: up to and including 7.10.3

Published 2021-01-12. Last modified 2026-06-17.