CVE-2026-41351 — MEDIUM (5.3)

Q: How severe is CVE-2026-41351?

CVE-2026-41351 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-41351?

Check the references section above for vendor advisories and patch information. Affected products include: Openclaw Openclaw.

Vulnerability 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.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Openclaw	Openclaw	< 2026.3.31

Related Weaknesses (CWE)

CWE-294

References

https://github.com/openclaw/openclaw/commit/ad77666054651c1fd77b1dc60fd6a8db6600Patch
https://github.com/openclaw/openclaw/security/advisories/GHSA-37v6-fxx8-xjmxVendor Advisory
https://www.vulncheck.com/advisories/openclaw-webhook-replay-detection-bypass-viThird Party Advisory

FAQ

What is CVE-2026-41351?

CVE-2026-41351 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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-enco...

How severe is CVE-2026-41351?

CVE-2026-41351 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-41351?

Check the references section above for vendor advisories and patch information. Affected products include: Openclaw Openclaw.