PatchTheCVECVE-2026-33143: OneUptime is a solution for monitoring and managing online services
CVE-2026-33143 is a high-severity flaw (CVSS 7.5) affecting oneuptime. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 codeb
Why this priority
- High severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 92%) |
| CISA exploited list | No |
| Weakness | CWE-345 |
| Published | 2026-03-20 |
| Last modified | 2026-10-07 |
Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-33143?
oneuptime: upgrade to 10.0.34. Exact commands for each OS are on this page.
Is CVE-2026-33143 being exploited?
CVE-2026-33143 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-33143 affect?
CVE-2026-33143 affects oneuptime. Severity is high (CVSS 7.5). 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-
How urgent is CVE-2026-33143?
Priority 38/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action
Software pages
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