Vulnerability · Published May 16, 2025 · Assigned by GitHub_M
CVE-2025-47793Nextcloud Server and Groupfolders app vulnerable to bypass of group folder quota limit using attachment in text file
Medium 4.3
In plain English
A medium-severity resource allocation without limits in security-advisories from nextcloud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).
Official description
Nextcloud Server is a self hosted personal cloud system, and the Nextcloud Groupfolders app provides admin-configured folders shared by everyone in a group or team. In Nextcloud Server prior to 30.0.2, 29.0.9, and 28.0.1, Nextcloud Enterprise Server prior to 30.0.2 and 29.0.9, and Nextcloud Groupfolders app prior to 18.0.3, 17.0.5, and 16.0.11, the absence of quota checking on attachments allowed logged-in users to upload files exceeding the group folder quota. Nextcloud Server versions 30.0.2 and 29.0.9, Nextcloud Enterprise Server versions 30.0.2, 29.0.9, or 28.0.12, and Nextcloud Groupfolders app 18.0.3, 17.0.5, and 16.0.11 fix the issue. No known workarounds are available.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| nextcloud | security-advisories | >= 30.0.0, < 30.0.2>= 29.0.0, < 29.0.9>= 28.0.0, < 28.0.12>= 18.0.0, < 18.0.3>= 17.0.0, < 17.0.5>= 16.0.0, < 16.0.11 |
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qqgg-hhfq-vhww x_refsource_CONFIRM
- https://github.com/nextcloud/groupfolders/pull/3328 x_refsource_MISC
- https://github.com/nextcloud/server/pull/48623 x_refsource_MISC
- https://hackerone.com/reports/2713272 x_refsource_MISC