OpenClaw up to 2026.3.30 Webhook Endpoint improper control of interaction frequency

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in OpenClaw up to 2026.3.30. This affects an unknown function of the component Webhook Endpoint. Executing a manipulation can lead to improper control of interaction frequency. This vulnerability is registered as CVE-2026-41343. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in OpenClaw up to 2026.3.30. This vulnerability affects an unknown functionality of the component Webhook Endpoint. The manipulation with an unknown input leads to a improper control of interaction frequency vulnerability. The CWE definition for the vulnerability is CWE-799. The product does not properly limit the number or frequency of interactions that it has with an actor, such as the number of incoming requests. As an impact it is known to affect availability. CVE summarizes:

OpenClaw before 2026.3.31 lacks a shared pre-auth concurrency budget on the public LINE webhook path, allowing attackers to cause transient availability loss. Remote attackers can flood the webhook endpoint with concurrent requests before signature verification to exhaust resources and degrade service availability.

The weakness was published by KeenSecurityLab as GHSA-qcc3-jqwp-5vh2. The advisory is available at github.com. This vulnerability was named CVE-2026-41343 since 04/20/2026. The exploitation appears to be easy. 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.

Upgrading to version 2026.3.31 eliminates this vulnerability. Applying the patch 57c47d8c7fbf5a2e70cc4dec2380977968903cad 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-2026-0948). If you want to get best quality of vulnerability data, you may have to visit VulDB.

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: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (VulnCheck): 🔒

CVSSv2info

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

Exploitinginfo

Class: Improper control of interaction frequency
CWE: CWE-799 / CWE-400 / CWE-404
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
Patch: 57c47d8c7fbf5a2e70cc4dec2380977968903cad

Timelineinfo

04/20/2026 CVE reserved
04/24/2026 +4 days Advisory disclosed
04/24/2026 +0 days VulDB entry created
04/28/2026 +4 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-qcc3-jqwp-5vh2
Researcher: KeenSecurityLab
Status: Confirmed

CVE: CVE-2026-41343 (🔒)
GCVE (CVE): GCVE-0-2026-41343
GCVE (VulDB): GCVE-100-359290
CERT Bund: WID-SEC-2026-0948 - OpenClaw: Mehrere Schwachstellen

Entryinfo

Created: 04/24/2026 07:53
Updated: 04/28/2026 09:33
Changes: 04/24/2026 07:53 (79), 04/28/2026 09:33 (7)
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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