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CVE

CVE-2025-47793

Nextcloud Server is a self hosted personal cloud system, and the Nextcloud Groupfolders app provides admin-configured fo

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.

MEDIUM · CVSS 4.3 EPSS 0.00284
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-770Allocation of Resources Without Limits or Throttling
▤

Affected Products & Versions

6
nextcloud group folders>= 16.0.0 and < 16.0.11
nextcloud group folders>= 17.0.0 and < 17.0.5
nextcloud group folders>= 18.0.0 and < 18.0.3
nextcloud server>= 28.0.0 and < 28.0.12
nextcloud server>= 29.0.0 and < 29.0.9
nextcloud server>= 30.0.0 and < 30.0.2
▣

Scoring & Timeline

4.3
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 May 2025 · 03:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/nextcloud/groupfolders/pull/3328Patch
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qqgg-hhfq-vhwwThird Party Advisory
https://github.com/nextcloud/server/pull/48623Patch
https://hackerone.com/reports/2713272Permissions Required
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