VulnerabilityAnalyzed
CVE-2025-66547
This vulnerability is fixed in 31.0.1.
MEDIUM 4.3EPSS 0.28%
Does this matter?
Lower severity and a low EPSS score (0.28%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 0.28% probability · 20th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-639
- Affected
- nextcloud/nextcloud server
- Source
- security-advisories@github.com
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hq6c-r898-fgf2Patch, Vendor Advisory
- https://github.com/nextcloud/server/commit/b44f1568f2dc97c746281d99e2342ad679e3d8a9Patch
- https://github.com/nextcloud/server/issues/51247Issue Tracking
- https://github.com/nextcloud/server/pull/51288Issue Tracking
- https://hackerone.com/reports/3040887Permissions Required, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.