CVE-2025-66545

Nextcloud Groupfolders users with read-only permissions for team folder can restore deleted files from trash bin

MEDIUM
4.3
CVSS Score
Published: December 5, 2025 at 05:44 PM UTC
Updated: October 15, 2026 at 09:10 PM UTC
2 products affected across 1 vendorGroup Folderssecurity-advisories

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

Description

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.

Affected

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

All versionsv < 14.0.1115.0.0 ≤ v < 15.3.1216.0.0 ≤ v < 16.0.1517.0.0 ≤ v < 17.0.1418.0.0 ≤ v < 18.1.819.0.0 ≤ v < 20.1.2

References (4)

x_refsource_MISCIssue Tracking
Source: cverecord
https://github.com/nextcloud/groupfolders/issues/4041
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/nextcloud/groupfolders/pull/4076

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

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

Quick Info

StatusANALYZED
CWE
CWE-707

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