CVE-2021-23927: Open-Xchange Appsuite

Medium severity, CVSS 6.4. EPSS: 0.8% chance of exploitation in the next 30 days.

OX App Suite through 7.10.4 allows SSRF via a URL with an @ character in an appsuite/api/oauth/proxy PUT request.

Affected products

• Open-Xchange Open-Xchange Appsuite: up to and including 7.10.4

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