CVE-2026-45667CWE-862

Open WebUI: Unauthenticated endpoint can trigger embedding generation (cost/DoS)

Medium · published May 15, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
36.6
In the wild
Unconfirmed
What it is

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, 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. This vulnerability is fixed in 0.8.0.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00433 · 36.6th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-05-15T21:41Z
EPSS history
Timeline
  • 15 MAY 21:41Z
    Open WebUI: Unauthenticated endpoint can trigger embedding generation (cost/DoS)
    cvelistv5