CVEvulnerability
CVE-2025-66547
4.3 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2025-12-05
- Last modified
- 2026-10-18
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Weaknesses
- CWE-639
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 configurations
• nextcloud nextcloud server (>= 31.0.0 < 31.0.1)
Related
Weakness · CWE (1)
- CWE-639 Authorization Bypass Through User-Controlled Key weakness
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hq6c-r898-fgf2 Patch, Vendor Advisory
- https://github.com/nextcloud/server/commit/b44f1568f2dc97c746281d99e2342ad679e3d8a9 Patch
- https://github.com/nextcloud/server/issues/51247 Issue Tracking
- https://github.com/nextcloud/server/pull/51288 Issue Tracking
- https://hackerone.com/reports/3040887 Permissions Required, Vendor Advisory