CVE-2026-44550
MEDIUM EPSS 20.4%
Published May 15, 20261mo ago · Modified Jun 17, 20262w ago
5.0 CVSS 3.1
Published May 15, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago
Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, FolderForm uses model_config = ConfigDict(extra='allow'), which permits arbitrary fields to pass through Pydantic validation and be included in model_dump(exclude_unset=True). In insert_new_folder, the server-assigned user_id is placed at the start of the dict and then overwritten by the spread of form data. Because FolderModel declares user_id: str as a real field (not just a form extra), any attacker-supplied user_id in the POST body is accepted by the model and persisted on the Folder row. This vulnerability is fixed in 0.9.0.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality None
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
20.4% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available
Weaknesses 1
CWE-862 Missing Authorization Authorization
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| openwebui | open_webui | * | <0.9.0 |
References 1
- github.com https://github.com/open-webui/open-webui/security/advisories/GHSA-hr43-rjmr-7wmm
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.