CVE-2026-33143

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/OneUptime/oneuptime/security/advisories/GHSA-g5ph-f57v-mwjc	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:hackerbay:oneuptime:*:*:*:*:*:*:*:*

History

23 Mar 2026, 20:48

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
References	~~() https://github.com/OneUptime/oneuptime/security/advisories/GHSA-g5ph-f57v-mwjc -~~	() https://github.com/OneUptime/oneuptime/security/advisories/GHSA-g5ph-f57v-mwjc - Exploit, Vendor Advisory
First Time		Hackerbay oneuptime Hackerbay
CPE		cpe:2.3:a:hackerbay:oneuptime::::::::

20 Mar 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-20 21:17

Updated : 2026-03-23 20:48

NVD link : CVE-2026-33143

Mitre link : CVE-2026-33143

CVE.ORG link : CVE-2026-33143

JSON object : View

Products Affected

hackerbay

oneuptime

CWE

CWE-345

Insufficient Verification of Data Authenticity

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