Open WebUI channel members endpoint exposes sensitive credentials

# Open WebUI channel members endpoint exposes sensitive credentials

https://gcdradar.vercel.app/incidents/open-webui-channel-members-endpoint-exposes-sensitive-creden · AIR-2026-0870 · closed 2026-07-09

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-07-09 (happened 2026-07-24)
- AI role: Attack on AI
- Products: Open WebUI
- CVE ids: CVE-2026-59222
- CVSS: 6

## Summary

A vulnerability in Open WebUI serializes and returns full user models including admin-only configuration and webhook keys via the channel members endpoint. Users can retrieve sensitive material that should otherwise remain restricted.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-07-24: CVE-2026-59222: Open WebUI: /api/v1/channels/{id}/members exposes full user model including sensitive credentials (https://github.com/advisories/GHSA-gh7p-78x6-jw6m)
- 2026-07-09: CVE-2026-59222: Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. (https://nvd.nist.gov/vuln/detail/CVE-2026-59222)

## Sources

- 2026-07-09 NVD: CVE-2026-59222: Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. https://nvd.nist.gov/vuln/detail/CVE-2026-59222
- 2026-07-24 GitHub Advisory Database: CVE-2026-59222: Open WebUI: /api/v1/channels/{id}/members exposes full user model including sensitive credentials https://github.com/advisories/GHSA-gh7p-78x6-jw6m

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.