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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| nextcloud | security-advisories | < 31.0.1 | — |
Advisories 1
- WID-SEC-2025-2752 Nextcloud: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 7, 2025
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hq6c-r898-fgf2
- https://github.com/nextcloud/server/issues/51247
- https://github.com/nextcloud/server/pull/51288
- https://github.com/nextcloud/server/commit/b44f1568f2dc97c746281d99e2342ad679e3d8a9
- https://hackerone.com/reports/3040887