Description

OpenClaw before 2026.3.25 parses JSON request bodies before validating webhook signatures, allowing unauthenticated attackers to force resource-intensive parsing operations. Remote attackers can send malicious webhook requests to trigger denial of service by exhausting server resources through forced JSON parsing before signature rejection.

INFO

Published Date :

2026-04-09T21:27:08.792Z

Last Modified :

2026-04-10T12:29:52.811Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2026-35640 vulnerability.

Vendors Products
Openclaw
  • Openclaw
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-35640.

URL Resource
https://github.com/openclaw/openclaw/commit/5e8cb22176e9235e224be0bc530699261eb60e53 cve-icon cve-icon
https://github.com/openclaw/openclaw/security/advisories/GHSA-3h52-cx59-c456 cve-icon cve-icon
https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unauthenticated-webhook-request-parsing cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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SS Confidentiality
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SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact