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CVE-2025-66551

Nextcloud Tables is missing an ownership check which allows moving columns into tables of other users

Published: Dec 5, 2025Updated: Dec 9, 2025 Sources: CVE List NVDCWE-639
6.3MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 84.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

Nextcloud Tables allows you to create your own tables with individual columns. Prior to 0.8.6 and 0.9.3, a malicious user was able to create their own table and then move a column to a victims table. This vulnerability is fixed in 0.8.6 and 0.9.3.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:UC:NI:HA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:LAvailability
Low
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Weaknesses

CWE-639

Affected Products

nextcloud
oss-project·DEaka nextcloud server
security-advisoriesSaaSSaaS Service
Cloud & SaaS / saas-application
tablesSaaSSaaS Service
Cloud & SaaS / saas-application

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
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References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-w787-vwqp-8wr7
github.com
https://github.com/nextcloud/tables/pull/1810
github.com
https://github.com/nextcloud/tables/commit/39f24a62fb41fd7a8bda65325f8bbafdc91c731c
github.com
and 1 more references View all →

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