CVE-2025-66552

Nextcloud Server admin_audit does not log all actions on files in groupfolders

MEDIUM
4.3
CVSS Score
Published: December 5, 2025 at 04:36 PM UTC
Updated: October 18, 2026 at 02:10 PM UTC
2 products affected across 1 vendorNextcloud/serversecurity-advisories

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Enterprise Server prior to 30.0.9 and 31.0.1, incorrect path handling with groupfolders caused the admin_audit app to not properly log all actions on files and folders inside groupfolders. This vulnerability is fixed in Nextcloud Server and Enterprise Server prior to 30.0.9 and 31.0.1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

30.0.0 ≤ v < 30.0.931.0.0 ≤ v < 31.0.1

References (4)

x_refsource_MISCIssue Tracking
Source: cverecord
https://github.com/nextcloud/server/pull/50992
x_refsource_MISCIssue TrackingVendor Advisory
Source: cverecord
https://hackerone.com/reports/2890071

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-778

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