OpenClaw up to 2026.2.18 ACP Bridge resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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3.2$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in OpenClaw up to 2026.2.18. The affected element is an unknown function of the component ACP Bridge. The manipulation leads to resource consumption. This vulnerability is traded as CVE-2026-27576. An attack has to be approached locally. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenClaw up to 2026.2.18. It has been rated as problematic. This issue affects an unknown code of the component ACP Bridge. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

OpenClaw is a personal AI assistant. In versions 2026.2.17 and below, the ACP bridge accepts very large prompt text blocks and can assemble oversized prompt payloads before forwarding them to chat.send. Because ACP runs over local stdio, this mainly affects local ACP clients (for example IDE integrations) that send unusually large inputs. This issue has been fixed in version 2026.2.19.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-27576 since 02/20/2026. The exploitation is known to be easy. An attack has to be approached locally. Neither technical details nor an exploit are publicly available.

Upgrading to version 2026.2.19 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 63e39d7f57ac4ad4a5e38d17e7394ae7c4dd0b9c 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: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

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 2026.2.19
Patch: 63e39d7f57ac4ad4a5e38d17e7394ae7c4dd0b9c

Timelineinfo

02/20/2026 CVE reserved
02/21/2026 +1 days Advisory disclosed
02/21/2026 +0 days VulDB entry created
02/21/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-cxpw-2g23-2vgw
Status: Confirmed

CVE: CVE-2026-27576 (🔒)
GCVE (CVE): GCVE-0-2026-27576
GCVE (VulDB): GCVE-100-347309

Entryinfo

Created: 02/21/2026 16:11
Changes: 02/21/2026 16:11 (70)
Complete: 🔍
Cache ID: 216::103

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