CVE-2025-47793
Nextcloud Server and Groupfolders app vulnerable to bypass of group folder quota limit using attachment in text file
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.
INFO
Published Date :
May 16, 2025, 3:15 p.m.
Last Modified :
Sept. 8, 2025, 9:54 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-47793
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Nextcloud Server to version 30.0.2 or later.
- Update Nextcloud Enterprise Server to version 30.0.2 or later.
- Update Nextcloud Groupfolders app to version 18.0.3 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-47793.
| URL | Resource |
|---|---|
| https://github.com/nextcloud/groupfolders/pull/3328 | Patch |
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qqgg-hhfq-vhww | Third Party Advisory |
| https://github.com/nextcloud/server/pull/48623 | Patch |
| https://hackerone.com/reports/2713272 | Permissions Required |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-47793 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-47793
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-47793 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-47793 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Sep. 08, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* versions from (including) 30.0.0 up to (excluding) 30.0.2 *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* versions from (including) 29.0.0 up to (excluding) 29.0.9 *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* versions from (including) 28.0.0 up to (excluding) 28.0.12 *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:* versions from (including) 30.0.0 up to (excluding) 30.0.2 *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:* versions from (including) 29.0.0 up to (excluding) 29.0.9 *cpe:2.3:a:nextcloud:group_folders:*:*:*:*:*:*:*:* versions from (including) 16.0.0 up to (excluding) 16.0.11 *cpe:2.3:a:nextcloud:group_folders:*:*:*:*:*:*:*:* versions from (including) 18.0.0 up to (excluding) 18.0.3 *cpe:2.3:a:nextcloud:group_folders:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.0.5 Added Reference Type GitHub, Inc.: https://github.com/nextcloud/groupfolders/pull/3328 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qqgg-hhfq-vhww Types: Third Party Advisory Added Reference Type GitHub, Inc.: https://github.com/nextcloud/server/pull/48623 Types: Patch Added Reference Type GitHub, Inc.: https://hackerone.com/reports/2713272 Types: Permissions Required