Vulnerability Report

CVE-2025-66545

Title: Nextcloud Groupfolders Unauthorized File Restore

Other

Proof Of Concept

No public PoC currently indexed for CVE-2025-66545.

CWE Category CWE-707
Published Date Dec 05, 2025
Modified Date Oct 15, 2026
Exploit Status Not Found
Score 3.5 CVSS v3.1
Exploit Probability (EPSS)
0.28%

Vulnerability Summary

CVE-2025-66545: Nextcloud Groupfolders provides admin-configured folders shared by everyone in a group or team. Prior to 14.0.11, 15.3.12, 16.0.15, 17.0.14, 18.1.8, 19.1.8, and 20.1.2, a user with read-only permission can restore a file from the trash bin. This vulnerability is fixed in 14.0.11, 15.3.12, 16.0.15, 17.0.14, 18.1.8, 19.1.8, and 20.1.2.

Impacted Vendors

N
nextcloud 1

Reference Links

https://github.com/nextcloud/groupfolders/commit/bbe87ebed8da23e9df4db637a76fbc8d36439d58 https://github.com/nextcloud/groupfolders/issues/4041 https://github.com/nextcloud/groupfolders/pull/4076 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2vrq-fhmf-c49m
CVSS v3.1
Source Entity [email protected]
Severity LOW
3.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
4.3
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2025-66545 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

MODIFIED

Vulnerability data updated via NVD.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Affected Stack

No specific products linked.