Nextcloud Server users can modify tags on files that do not belong to them
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.
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-66547US | — | — | ||
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 ha… | ||||
02
references
External citations — patches, advisories, analysis.
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hq6c-r898-fgf2ADVISORY
- https://github.com/nextcloud/server/commit/b44f1568f2dc97c746281d99e2342ad679e3d8a9FIX
- https://github.com/nextcloud/server/issues/51247REPORT
- https://github.com/nextcloud/server/pull/51288REPORT
- https://hackerone.com/reports/3040887ADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2025-66547WEB
scry
Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.
Free scan