OpenClaw up to 2026.4.9 Write Message authorization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in OpenClaw up to 2026.4.9. Affected is an unknown function of the component Write Message Handler. The manipulation results in authorization. This vulnerability is known as CVE-2026-42433. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in OpenClaw up to 2026.4.9. It has been classified as critical. Affected is an unknown part of the component Write Message Handler. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

OpenClaw before 2026.4.10 contains an authorization bypass vulnerability allowing operator.write message-tool paths to access Matrix profile persistence requiring admin-level authority. Attackers can exploit insufficient access controls to mutate persistent profile configuration through non-owner message-tool runs.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-42433 since 04/27/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available.

Upgrading to version 2026.4.10 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1161). Once again VulDB remains the best source for vulnerability data.

Affected

  • Open Source OpenClaw

Productinfo

Type

Name

Version

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: 6.4
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
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 2026.4.10

Timelineinfo

04/27/2026 CVE reserved
05/05/2026 +8 days Advisory disclosed
05/05/2026 +0 days VulDB entry created
05/06/2026 +1 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-42433 (🔒)
GCVE (CVE): GCVE-0-2026-42433
GCVE (VulDB): GCVE-100-361140
CERT Bund: WID-SEC-2026-1161 - OpenClaw: Mehrere Schwachstellen

Entryinfo

Created: 05/05/2026 14:01
Updated: 05/06/2026 09:23
Changes: 05/05/2026 14:01 (75), 05/06/2026 09:23 (7)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

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