CVE-2025-66551 MEDIUM

CVE-2025-66551: Nextcloud Tables is missing an ownership check which allows moving columns into tables of other users

Vendor Nextcloud
Product security-advisories
Weakness CWE-639 · IDOR
Published December 5, 2025
Last update December 9, 2025
View on NVD All CVEs

CVSS base score

6.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

December 5, 2025 CVE published
December 9, 2025 Record updated