Open WebUI: Unauthenticated endpoint can trigger embedding generation (cost/DoS) — CVE-2026-45667

Summary

### Summary GET `/api/v1/memories/ef` is accessible without authentication and executes `request.app.state.EMBEDDING_FUNCTION(...)`. This allows any unauthenticated caller to trigger embedding generation which can lead to direct cost exposure if a paid provider is used. Code reference: `backend/open_webui/routers/memories.py` (@router.get("/ef") -> calls `request.app.state.EMBEDDING_FUNCTION("hello world"))`. ###…

Product

pip: open-webui

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

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