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.
References (5)
Core 5
Core References
Patch, Vendor Advisory x_refsource_confirm
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hq6c-r898-fgf2
Issue Tracking x_refsource_misc
https://github.com/nextcloud/server/issues/51247
Issue Tracking x_refsource_misc
https://github.com/nextcloud/server/pull/51288
Patch x_refsource_misc
https://github.com/nextcloud/server/commit/b44f1568f2dc97c746281d99e2342ad679e3d8a9
Permissions Required, Vendor Advisory x_refsource_misc
https://hackerone.com/reports/3040887
Scores
CVSS v3
4.3
EPSS
0.0002
EPSS Percentile
6.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-639
Status
published
Products (1)
nextcloud/nextcloud_server
31.0.0 - 31.0.1 (2 CPE variants)
Published
Dec 05, 2025
Tracked Since
Feb 18, 2026