CVE-2026-33143
High · 7.5CVSS
7.5
EPSS
0.2%
Published
Mar 20, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | oneuptime | 0 | 10.0.34 |
Related vulnerabilities
- GHSA-g5ph-f57v-mwjc OneUptime WhatsApp Webhook Missing Signature Verification Same vulnerability
- CVE-2026-33142 OneUptime is a solution for monitoring and managing online services. Also affects oneuptime
- GHSA-gcg3-c5p2-cqgg OneUptime ClickHouse vulnerable to SQL Injection via unvalidated column identifiers in… Also affects oneuptime
- GHSA-4524-cj9j-g4fj OneUptime: Password Reset Token Logged at INFO Level Also affects oneuptime
- GHSA-wvh5-6vjm-23qh OneUptime: Stored XSS via Mermaid Diagram Rendering (securityLevel: "loose") Also affects oneuptime
- GHSA-p5g2-jm85-8g35 OneUptime ClickHouse SQL Injection via Aggregate Query Parameters Also affects oneuptime
- CVE-2026-32598 OneUptime is a solution for monitoring and managing online services. Also affects oneuptime
- CVE-2026-32308 OneUptime is a solution for monitoring and managing online services. Also affects oneuptime