OpenClaw up to 2026.4.1 ws Gateway Endpoint cleartext transmission

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in OpenClaw up to 2026.4.1. Affected by this vulnerability is an unknown functionality of the component ws Gateway Endpoint Handler. Executing a manipulation can lead to cleartext transmission. This vulnerability is tracked as CVE-2026-40045. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in OpenClaw up to 2026.4.1 and classified as problematic. This vulnerability affects some unknown functionality of the component ws Gateway Endpoint Handler. The manipulation with an unknown input leads to a cleartext transmission vulnerability. The CWE definition for the vulnerability is CWE-319. The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors. As an impact it is known to affect confidentiality. CVE summarizes:

OpenClaw before 2026.4.2 accepts non-loopback cleartext ws:// gateway endpoints and transmits stored gateway credentials over unencrypted connections. Attackers can forge discovery results or craft setup codes to redirect clients to malicious endpoints, disclosing plaintext gateway credentials.

The weakness was disclosed by KeenSecurityLab as GHSA-83f3-hh45-vfw9. The advisory is available at github.com. This vulnerability was named CVE-2026-40045 since 04/08/2026. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1040 by the MITRE ATT&CK project.

Upgrading to version 2026.4.2 eliminates this vulnerability. Applying the patch a941a4fef9bc43b2973c92d0dcff5b8a426210c5 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 CNNVD (CNNVD-202604-4191). If you want to get best quality of vulnerability data, you may have to visit VulDB.

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: 4.7
VulDB Meta Temp Score: 4.6

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.7
CNA Vector (VulnCheck): 🔒

CVSSv2info

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

Exploitinginfo

Class: Cleartext transmission
CWE: CWE-319 / CWE-310
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 2026.4.2
Patch: a941a4fef9bc43b2973c92d0dcff5b8a426210c5

Timelineinfo

04/08/2026 CVE reserved
04/21/2026 +13 days Advisory disclosed
04/21/2026 +0 days VulDB entry created
04/22/2026 +1 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-83f3-hh45-vfw9
Researcher: KeenSecurityLab
Status: Confirmed

CVE: CVE-2026-40045 (🔒)
GCVE (CVE): GCVE-0-2026-40045
GCVE (VulDB): GCVE-100-358402
CNNVD: CNNVD-202604-4191 - OpenClaw 安全漏洞

Entryinfo

Created: 04/21/2026 07:16
Updated: 04/22/2026 19:33
Changes: 04/21/2026 07:16 (80), 04/22/2026 19:33 (6)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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