CVE-2025-66545 Nextcloud Groupfolders users with read-only permissions for team folder can restore deleted files from trash bin
Users with read-only permissions can restore deleted files from the trash bin, violating access controls.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-66545?
CVE-2025-66545 is a low-severity missing authorization vulnerability in nextcloud security-advisories, published on 5 Dec 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-707
Which versions are affected by CVE-2025-66545?
It affects 1 product.
Products include Nextcloud Group Folders.
How do I fix CVE-2025-66545?
No fix has been published for CVE-2025-66545 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-66545 being exploited?
There is no known exploitation of CVE-2025-66545 in the wild and no public exploit code.
Other vulnerabilities in nextcloud security-advisories
Sources
Also known as GHSA-2vrq-fhmf-c49m.