Vulnerability in Nextcloud Nextcloud_server
CVE-2025-66552
Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Enterprise Server prior to 30.0.9 and 31.0.1, incorrect path handling with groupfolders caused the admin_audit app to not properly log all actions on files an…
EPSS: 0.003 (18.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Nextcloud Nextcloud_server
- Nextcloud Security-advisories — versions >= 32.0.0beta1, < 32.0.1, < 31.0.9
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-66552?
- CVE-2025-66552 is a medium-severity vulnerability in Nextcloud Nextcloud_server, classified under CWE-778. CVSS score: 4.3/10. Published 2025-12-05.
- How severe is CVE-2025-66552?
- Medium severity. CVSS v3 base score is 4.3 out of 10.