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CVE-2025-47793

Nextcloud Server and Groupfolders app vulnerable to bypass of group folder quota limit using attachment in text file

Published: May 16, 2025Updated: Sep 8, 2025 Sources: CVE List NVD BDUCWE-770
NVD MITRE
4.3CVSSMEDIUM
EPSS Score
0.7%
Top 53.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-770

Affected Products

group foldersnextcloud
On-prem
Cloud & SaaS / saas-application
nextcloud servernextcloud
SaaSSaaS Service
Cloud & SaaS / saas-application
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
Nextcloud ServerNextcloud GmbH
SaaSSaaS Service
Cloud & SaaS / saas-application
Nextcloud Enterprise ServerNextcloud GmbH
SaaSSaaS Service
Cloud & SaaS / saas-application
nextcloudoss-projectDECloud & SaaSaka nextcloud server
ооо «ред софт»commercialRUOperating Systemsaka red soft
nextcloud gmbhcommercialDECloud & SaaSaka nextcloud server, nextcloud enterprise server, nextcloud calendar
and 2 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/nextcloud/groupfolders/pull/3328
github.com
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qqgg-hhfq-vhww
github.com
https://github.com/nextcloud/server/pull/48623
github.com
and 3 more references View all →

Timeline

Published
May 16, 2025
Last Updated
Sep 8, 2025

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