CVE-2026-44560CWE-862

Open WebUI: Unauthorized File and Knowledge Base Content Access via RAG Vector Search

Medium · published May 15, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
31.1
In the wild
Unconfirmed
What it is

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the type: "file" (non-full-context), type: "text" with collection_name, and bare collection_name/collection_names paths in the get_sources_from_items function perform vector store queries without any authorization check, allowing users to extract content from files and knowledge bases they do not have access to. This vulnerability is fixed in 0.9.0.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00382 · 31.1th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-05-15T19:40Z
EPSS history
Timeline
  • 15 MAY 19:40Z
    Open WebUI: Unauthorized File and Knowledge Base Content Access via RAG Vector Search
    cvelistv5