CVE-2025-66553: Nextcloud Tables allows you to create your own tables with individual columns. Prior to 0.8.7 and 0.9.4, authenticated…
CVE-2025-66553 · Severity: medium · CVSS 4.3 · Published 2025-12-05
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.
No. Junglewise Threat Intelligence has no report of CVE-2025-66553 being exploited in the wild.
How severe is CVE-2025-66553?
Medium severity, with a CVSS score of 4.3, published 5 December 2025.
Which products and versions are affected?
Nextcloud Tables. The advisory does not name versions.
Is there a fix for CVE-2025-66553?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-66553?
Check whether you run Nextcloud Tables. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.