CVE-2025-66547
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.
No affected software listed.
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hq6c-r898-fgf2
- https://github.com/nextcloud/server/commit/b44f1568f2dc97c746281d99e2342ad679e3d8a9
- https://github.com/nextcloud/server/issues/51247
- https://github.com/nextcloud/server/pull/51288
- https://hackerone.com/reports/3040887
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