CVE-2026-27576 | THREATINT

Description

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.

PUBLISHED Reserved 2026-02-20 | Published 2026-02-21 | Updated 2026-02-24 | Assigner GitHub_M

MEDIUM: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Problem types

CWE-400: Uncontrolled Resource Consumption

Product status

< 2026.2.19

affected

References

github.com/...enclaw/security/advisories/GHSA-cxpw-2g23-2vgw

github.com/...ommit/63e39d7f57ac4ad4a5e38d17e7394ae7c4dd0b9c

github.com/...ommit/8ae2d5110f6ceadef73822aa3db194fb60d2ba68

github.com/...ommit/ebcf19746f5c500a41817e03abecadea8655654a

github.com/openclaw/openclaw/releases/tag/v2026.2.19

cve.org (CVE-2026-27576)

nvd.nist.gov (CVE-2026-27576)

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