CVE-2025-66545: Nextcloud Groupfolders users with read-only permissions for team folder can restore deleted files from trash bin

Medium severity · published Dec 5, 2025

CVE-2025-66545

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

4.3

CVSS

0.3%

EPSS

On KEV

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack vector

Network

Complexity

Low

Privileges

Low

User interaction

None

Confidentiality

None

Integrity

Low

Availability

None

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.3% · higher than 21% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

security-advisories · nextcloud

< 14.0.11; >= 15.0.0-beta1, < 15.3.12; >= 16.0.0, < 16.0.15; >= 17.0.0-beta.1, < 17.0.14; >= 18.0.0-beta.1, < 18.1.8; >= 19.0.0-alpha.1, < 19.1.8; +1 more · source: vendor

Group Folders · Nextcloud

before 14.0.11; 15.0.0 before 15.3.12; 16.0.0 before 16.0.15; 17.0.0 before 17.0.14; 18.0.0 before 18.1.8; 19.0.0 before 20.1.2 · source: NVD

Affected product

security-advisories

nextcloud

All security-advisories CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2025-66545

CVE.org

https://www.cve.org/CVERecord?id=CVE-2025-66545

Patch