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CVE-2026-33143

CVE-2026-33143 · OneUptime: WhatsApp Webhook Missing Signature Verification

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 8.7 · High · EPSS 0.2% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • oneuptime

    Versions
    • < 10.0.34: Affected

    No fix published

  • oneuptime npm

    Affected ranges
    • SEMVER: < 10.0.34

    Update to 10.0.34

Original sources

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