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TI-2026-25573 Aliases CVE-2026-33143GHSA-g5ph-f57v-mwjc

OneUptime: WhatsApp Webhook Missing Signature Verification

Priority HIGH 77CWE-345Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-345.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0019 8th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed oneuptime (OneUptime): 10.0.34oneuptime (npm): 10.0.34

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OneUptimeoneuptimebefore 10.0.3410.0.34Patch availableCNA
—oneuptime (npm)before 10.0.3410.0.34Patch availableGHSA-g5ph-f57v-mwjc
  • oneuptime VendorOneUptime Affected before 10.0.34 Fixed in 10.0.34 Patch available CNA
  • oneuptime (npm) Vendor— Affected before 10.0.34 Fixed in 10.0.34 Patch available GHSA-g5ph-f57v-mwjc

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:hackerbay:oneuptime:*:*:*:*:*:*:*:*before 10.0.34VulnerableOneUptime
  • cpe:2.3:a:hackerbay:oneuptime:*:*:*:*:*:*:*:* Versions before 10.0.34 Vulnerable ·OneUptime

Remediation

  • Fix · CNA oneuptime (OneUptime) Fixed in 10.0.34
  • Fix · GHSA-g5ph-f57v-mwjc oneuptime (npm) Fixed in 10.0.34 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-33143
  2. 2026-10-03 Alias added: GHSA-g5ph-f57v-mwjc

References

Exploit 1

Advisory 1

Other 1

  • TI-2026-22090 OneUptime: OS Command Injection in Probe NetworkPathMonitor via unsanitized destination in traceroute exec() CVSS 3.1CRITICAL 10.0
  • TI-2026-27002 OneUptime: Missing Authentication on Notification Endpoints CVSS 3.1CRITICAL 9.1
  • TI-2025-40534 OneUptime Unauthorized User Creation via API CVSS 4.0HIGH 8.8
  • TI-2026-25793 Protection mechanism failure in oneuptime CVSS 3.1CRITICAL 10.0
  • TI-2026-24835 OneUptime ClickHouse SQL Injection via Aggregate Query Parameters CVSS 3.1CRITICAL 10.0
  • TI-2026-23783 OneUptime: Path Traversal — Arbitrary File Read (No Auth) CVSS 3.1HIGH 8.6
See all 22 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences