CVE-2023-25816: Nextcloud Server

Medium severity, CVSS 6.5. EPSS: 1.4% chance of exploitation in the next 30 days.

Nextcloud is an Open Source private cloud software. Versions 25.0.0 and above, prior to 25.0.3, are subject to Uncontrolled Resource Consumption. A user can configure a very long password, consuming more resources on password validation than desired. This issue is patched in 25.0.3 No workaround is available.

Affected products

• Nextcloud Nextcloud Server: from 25.0.0, before 25.0.3 (fixed in 25.0.3)

Published 2023-02-25. Last modified 2026-06-17.