vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2025-66551

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

MEDIUM
4.3
CVSS Score
Published: December 5, 2025 at 05:15 PM UTC
Updated: September 25, 2026 at 11:27 PM UTC
1 product affected across 1 vendorTables

Using security-advisories by nextcloud?

Get instant alerts when new vulnerabilities affect security-advisories - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Tables· Nextcloudnextcloud-app
95%
0.4.0 ≤ v < 0.8.60.9.0 ≤ v < 0.9.3
Affected range stops below 0.8.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.9.3, so it looks safe — our inference, not a vendor statement

References (4)

x_refsource_CONFIRMVendor Advisory
Source: cverecord
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-w787-vwqp-8wr7
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/nextcloud/tables/pull/1810
x_refsource_MISCPatch
Source: cverecord
https://github.com/nextcloud/tables/commit/39f24a62fb41fd7a8bda65325f8bbafdc91c731c
x_refsource_MISCIssue TrackingVendor Advisory
Source: cverecord
https://hackerone.com/reports/3137895

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-639

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card