CVE-2026-59212: Open WebUI model meta.knowledge file access escalation

# CVE-2026-59212: Open WebUI model meta.knowledge file access escalation

https://gcdradar.vercel.app/incidents/cve-2026-59212-open-webui-model-meta-knowledge-file-access-e · AIR-2026-0863 · 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-2026-59212
- CVSS: 5.4

## Summary

Open WebUI contains an incomplete fix allowing read-only access to files to be escalated to write and delete permissions. Attackers can achieve this by attaching target file IDs to attacker-controlled workspace models.

## What to do

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

## Latest updates

- 2026-07-24: CVE-2026-59212: Open WebUI: Model meta.knowledge read-only file access can be upgraded to file write/delete (https://github.com/advisories/GHSA-2xwm-4h2q-ggfx)
- 2026-07-09: CVE-2026-59212: Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. (https://nvd.nist.gov/vuln/detail/CVE-2026-59212)

## Sources

- 2026-07-09 NVD: CVE-2026-59212: Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. https://nvd.nist.gov/vuln/detail/CVE-2026-59212
- 2026-07-24 GitHub Advisory Database: CVE-2026-59212: Open WebUI: Model meta.knowledge read-only file access can be upgraded to file write/delete https://github.com/advisories/GHSA-2xwm-4h2q-ggfx

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