CVE-2026-27576

The record

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.

Affected packages

Related vulnerabilities

• GHSA-cxpw-2g23-2vgw OpenClaw: ACP prompt-size checks missing in local stdio bridge could reduce… Same vulnerability
• GHSA-4hpg-mp64-x7xq OpenClaw: Internal/webchat command auth could inherit ownerAllowFrom wildcard state Also affects openclaw
• GHSA-8mg9-j9cf-54cj OpenClaw: Empty-scope device re-pairing could confuse caller scope containment Also affects openclaw
• GHSA-rx78-29qr-5hq8 OpenClaw: Workspace-derived service PATH could influence trash command selection Also affects openclaw
• GHSA-wc84-j36w-pw4x OpenClaw: Workspace .env STATE_DIRECTORY could influence bundled runtime dependency roots Also affects openclaw
• GHSA-cw4q-gqg5-g38h OpenClaw: Discord allowFrom could bind to mutable display names Also affects openclaw
• GHSA-mpc8-jxjh-qpgh OpenClaw: Focus command could miss controlScope enforcement Also affects openclaw
• GHSA-24vr-rprv-67rf OpenClaw: Workspace .env npm_execpath could influence bundled runtime dependency install Also affects openclaw