OpenClaw up to 2026.2.12 Webhook allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in OpenClaw up to 2026.2.12. The impacted element is an unknown function of the component Webhook Handler. Executing a manipulation can lead to allocation of resources. This vulnerability appears as CVE-2026-28478. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenClaw up to 2026.2.12. It has been declared as problematic. This vulnerability affects an unknown functionality of the component Webhook Handler. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. CVE summarizes:

OpenClaw versions prior to 2026.2.13 contain a denial of service vulnerability in webhook handlers that buffer request bodies without strict byte or time limits. Remote unauthenticated attackers can send oversized JSON payloads or slow uploads to webhook endpoints causing memory pressure and availability degradation.

The advisory is available at github.com. This vulnerability was named CVE-2026-28478 since 02/27/2026. 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. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 2026.2.13 eliminates this vulnerability. Applying the patch 3cbcba10cf30c2ffb898f0d8c7dfb929f15f8930 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.

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: 6.4
VulDB Meta Temp Score: 6.3

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

CNA Base Score: 7.5
CNA Vector (VulnCheck): 🔒

CVSSv2info

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

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / 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 2026.2.13
Patch: 3cbcba10cf30c2ffb898f0d8c7dfb929f15f8930

Timelineinfo

02/27/2026 CVE reserved
03/06/2026 +7 days Advisory disclosed
03/06/2026 +0 days VulDB entry created
03/10/2026 +4 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-q447-rj3r-2cgh
Status: Confirmed

CVE: CVE-2026-28478 (🔒)
GCVE (CVE): GCVE-0-2026-28478
GCVE (VulDB): GCVE-100-349378

Entryinfo

Created: 03/06/2026 07:44
Updated: 03/10/2026 14:54
Changes: 03/06/2026 07:44 (43), 03/06/2026 07:45 (34), 03/10/2026 14:54 (1)
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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