CVE-2025-47794: Nextcloud Server

Medium severity, CVSS 4.3. EPSS: 0.5% chance of exploitation in the next 30 days.

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server prior to 29.0.13, 30.0.7, and 31.0.1 and Nextcloud Enterprise Server prior to 26.0.13.13, 27.1.11.13, 28.0.14.4, 29.0.13, 30.0.7, and 31.0.1, an attacker on a multi-user system may read temporary files from Nextcloud running with a different user account, or run a symlink attack. Nextcloud Server versions 29.0.13, 30.0.7, and 31.0.1 and Nextcloud Enterprise Server 26.0.13.13, 27.1.11.13, 28.0.14.4, 29.0.13, 30.0.7, and 31.0.1 fix the issue. No known workarounds are available.

Affected products

• Nextcloud Nextcloud Server: from 26.0.0, before 26.0.13.13 (fixed in 26.0.13.13); from 27.0.0, before 27.1.11.13 (fixed in 27.1.11.13); from 28.0.0, before 28.0.14.4 (fixed in 28.0.14.4); from 29.0.0, before 29.0.13 (fixed in 29.0.13); from 30.0.0, before 30.0.7 (fixed in 30.0.7); from 31.0.0, before 31.0.1 (fixed in 31.0.1)

Published 2025-05-16. Last modified 2026-06-17.