Security Advisory
CVE-2025-66547
4.3
MEDIUM
Vulnerability Description
Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Enterprise Server prior to 31.0.1, non-privileged users can modify tags on files they should not have access to via bulk tagging. This vulnerability is fixed in 31.0.1.
Published Date
December 5, 2025
Official Source
NIST NVD Advisory