Description

OpenClaw before 2026.3.31 contains a replay detection bypass vulnerability in webhook signature handling that treats Base64 and Base64URL encoded signatures as distinct requests. Attackers can re-encode Telnyx webhook signatures to bypass replay detection while maintaining valid signature verification.

INFO

Published Date :

2026-04-23T21:58:11.440Z

Last Modified :

2026-04-24T13:33:45.799Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2026-41351 vulnerability.

Vendors Products
Openclaw
  • Openclaw
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-41351.

URL Resource
https://github.com/openclaw/openclaw/commit/ad77666054651c1fd77b1dc60fd6a8db6600a29a cve-icon cve-icon
https://github.com/openclaw/openclaw/security/advisories/GHSA-37v6-fxx8-xjmx cve-icon cve-icon
https://www.vulncheck.com/advisories/openclaw-webhook-replay-detection-bypass-via-base64-signature-re-encoding cve-icon cve-icon
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CVSS Vulnerability Scoring System

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