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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-40037 Detail

Description

OpenClaw before 2026.3.31 (patched in 2026.4.8) contains a request body replay vulnerability in fetchWithSsrFGuard that allows unsafe request bodies to be resent across cross-origin redirects. Attackers can exploit this by triggering redirects to exfiltrate sensitive request data or headers to unintended origins.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  VulnCheck
CVSS-B 7.1 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/openclaw/openclaw/commit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5 VulnCheck Patch 
https://github.com/openclaw/openclaw/security/advisories/GHSA-qx8j-g322-qj6m VulnCheck Vendor Advisory 
https://www.vulncheck.com/advisories/openclaw-unsafe-request-body-replay-via-fetchwithssrfguard-cross-origin-redirects VulnCheck Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-601 URL Redirection to Untrusted Site ('Open Redirect') VulnCheck  

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-40037
NVD Published Date:
04/08/2026
NVD Last Modified:
07/24/2026
Source:
VulnCheck