CVE-2025-66552

MEDIUM EPSS 17.8%
Published Dec 5, 20256mo ago · Modified Jun 17, 20262w ago
4.3 CVSS 3.1
Medium
Find Similar
Published Dec 5, 2025 6mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
4.3
Exploitability
2.8
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
17.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-778

Affected Products 4

VendorProductVersionRange
nextcloudnextcloud_server*≥30.0.0  –  <30.0.9
nextcloudnextcloud_server*≥30.0.0  –  <30.0.9
nextcloudnextcloud_server*≥31.0.0  –  <31.0.1
nextcloudnextcloud_server*≥31.0.0  –  <31.0.1

References 4

  • github.com https://github.com/nextcloud/security-advisories/security/advisories/GHSA-ww9m-f8j4-jj9x
    PatchVendor Advisory
  • github.com https://github.com/nextcloud/server/commit/7cc005c43c72bc384848cf8cb851895827c412f6
    Patch
  • github.com https://github.com/nextcloud/server/pull/50992
    Issue Tracking
  • hackerone.com https://hackerone.com/reports/2890071
    Issue TrackingVendor Advisory

Remediation

  • github.com https://github.com/nextcloud/security-advisories/security/advisories/GHSA-ww9m-f8j4-jj9x
    PatchVendor Advisory
  • github.com https://github.com/nextcloud/server/commit/7cc005c43c72bc384848cf8cb851895827c412f6
    Patch