OpenClaw up to 2026.3.24 JSON Parser incorrect behavior order

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

Summaryinfo

A vulnerability classified as problematic was found in OpenClaw up to 2026.3.24. This issue affects some unknown processing of the component JSON Parser. Executing a manipulation can lead to incorrect behavior order. The identification of this vulnerability is CVE-2026-35640. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic was found in OpenClaw up to 2026.3.24. This vulnerability affects an unknown function of the component JSON Parser. The manipulation with an unknown input leads to a incorrect behavior order vulnerability. The CWE definition for the vulnerability is CWE-696. The product performs multiple related behaviors, but the behaviors are performed in the wrong order in ways which may produce resultant weaknesses. As an impact it is known to affect availability. CVE summarizes:

OpenClaw before 2026.3.25 parses JSON request bodies before validating webhook signatures, allowing unauthenticated attackers to force resource-intensive parsing operations. Remote attackers can send malicious webhook requests to trigger denial of service by exhausting server resources through forced JSON parsing before signature rejection.

The advisory is available at github.com. This vulnerability was named CVE-2026-35640 since 04/04/2026. 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 2026.3.25 eliminates this vulnerability. Applying the patch 5e8cb22176e9235e224be0bc530699261eb60e53 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.

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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: Incorrect behavior order
CWE: CWE-696
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 2026.3.25
Patch: 5e8cb22176e9235e224be0bc530699261eb60e53

Timelineinfo

04/04/2026 CVE reserved
04/10/2026 +6 days Advisory disclosed
04/10/2026 +0 days VulDB entry created
04/10/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-3h52-cx59-c456
Status: Confirmed

CVE: CVE-2026-35640 (🔒)
GCVE (CVE): GCVE-0-2026-35640
GCVE (VulDB): GCVE-100-356734

Entryinfo

Created: 04/10/2026 06:31
Changes: 04/10/2026 06:31 (78)
Complete: 🔍
Cache ID: 216::103

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