What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-05 · updated 2026-10-15
• Weakness: CWE-707

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 products

• nextcloud Group Folders: before 14.0.11; from 15.0.0 before 15.3.12; from 16.0.0 before 16.0.15; from 17.0.0 before 17.0.14; from 18.0.0 before 18.1.8; from 19.0.0 before 20.1.2 — fixed in 14.0.11, 15.3.12, 16.0.15, 17.0.14, 18.1.8, 20.1.2

How to fix

Upgrade to a fixed version: nextcloud Group Folders 14.0.11, 15.3.12, 16.0.15, 17.0.14. Check the vendor advisory for mitigations.

References

• 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

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