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VULNERABILITIES

CVE-2026-41351 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/openclaw/openclaw/commit/ad77666054651c1fd77b1dc60fd6a8db6600a29a [email protected]Patch
https://github.com/openclaw/openclaw/security/advisories/GHSA-37v6-fxx8-xjmx [email protected]Vendor Advisory
https://www.vulncheck.com/advisories/openclaw-webhook-replay-detection-bypass-via-base64-signature-re-encoding [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-294Authentication Bypass by Capture-replay[email protected]

Affected Products

ProductVersions
openclaw openclaw
< 2026.3.31

CPE

  • cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-41351
NVD Published Date:
Apr 23, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-41351 Details - Not Deferred