CVEvulnerability

CVE-2026-44559

4.3 MEDIUM Published 2026-05-15 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-05-15
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-862

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the GET /api/v1/channels/{id}/members endpoint only checks membership for group and dm channel types (lines 467-469). For standard channels — including private ones — there is no channel_has_access check before returning the member list. Any authenticated user who knows a private channel's UUID can enumerate all users with access to that channel. This vulnerability is fixed in 0.9.0.

Affected configurations

• openwebui open webui (< 0.9.0)

Related

Weakness · CWE (1)

  • CWE-862 Missing Authorization weakness

References