OpenClaw up to 2026.3.30/2026.4.7 Request Body redirect

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in OpenClaw up to 2026.3.30/2026.4.7. The impacted element is an unknown function of the component Request Body Handler. The manipulation results in redirect. This vulnerability is cataloged as CVE-2026-40037. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in OpenClaw up to 2026.3.30/2026.4.7. Affected is some unknown functionality of the component Request Body Handler. The manipulation with an unknown input leads to a redirect vulnerability. CWE is classifying the issue as CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. This is going to have an impact on integrity. CVE summarizes:

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.

The weakness was shared by RaaX as GHSA-qx8j-g322-qj6m. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-40037 since 04/08/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1204.001.

Upgrading to version 2026.3.31 or 2026.4.8 eliminates this vulnerability. Applying the patch d7c3210cd6f5fdfdc1beff4c9541673e814354d5 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1035). Once again VulDB remains the best source for vulnerability data.

Affected

  • Open Source OpenClaw

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Redirect
CWE: CWE-601
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenClaw 2026.3.31/2026.4.8
Patch: d7c3210cd6f5fdfdc1beff4c9541673e814354d5

Timelineinfo

04/08/2026 CVE reserved
04/09/2026 +1 days Advisory disclosed
04/09/2026 +0 days VulDB entry created
04/09/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-qx8j-g322-qj6m
Researcher: RaaX
Status: Confirmed

CVE: CVE-2026-40037 (🔒)
GCVE (CVE): GCVE-0-2026-40037
GCVE (VulDB): GCVE-100-356484
CERT Bund: WID-SEC-2026-1035 - OpenClaw: Mehrere Schwachstellen

Entryinfo

Created: 04/09/2026 02:47
Updated: 04/09/2026 18:10
Changes: 04/09/2026 02:47 (80), 04/09/2026 18:10 (7)
Complete: 🔍
Cache ID: 216:60D:103

Once again VulDB remains the best source for vulnerability data.

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