Nextcloud Tables Priv Escalation: View Meta via ID (<=0.8.6/0.9.3)
CVE-2025-66553 Published on December 5, 2025
Nextcloud Tables app allowed users to view columns metadata information of any table
Nextcloud Tables allows you to create your own tables with individual columns. Prior to 0.8.7 and 0.9.4, authenticated users were able to view meta data of columns in other tables of the Tables app by modifying the numeric ID in a request. This vulnerability is fixed in 0.8.7 and 0.9.4.
Vulnerability Analysis
CVE-2025-66553 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Weakness Type
What is an Insecure Direct Object Reference / IDOR Vulnerability?
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
CVE-2025-66553 has been classified to as an Insecure Direct Object Reference / IDOR vulnerability or weakness.
Affected Versions
nextcloud security-advisories:- Version >= 0.9.0-beta.1, < 0.9.4 is affected.
- Version < 0.8.7 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.