AI agent vulnerability · OpenClaw

CVE-2026-41299: OpenClaw: Gateway chat.send ACP-only provenance guard could be bypassed by client identity spoofing

highGHSA-6xg4-82hv-cp6f

Summary ACP-only provenance fields in chat.send were gated by self-declared client metadata from the WebSocket handshake rather than verified authorization state. Impact A normal authenticated operator client could spoof ACP identity labels and inject reserved provenance fields intended only for the ACP bridge.

Published Mar 31, 2026 · Updated Apr 20, 2026

Affected packages

openclaw

Ecosystem: npm
Affected: <= 2026.3.24
Fixed in: 2026.3.28
Check: npm ls openclaw

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Summary

ACP-only provenance fields in chat.send were gated by self-declared client metadata from the WebSocket handshake rather than verified authorization state.

Impact

A normal authenticated operator client could spoof ACP identity labels and inject reserved provenance fields intended only for the ACP bridge.

Affected Component

src/gateway/server-methods/chat.ts, src/gateway/server/ws-connection/message-handler.ts

Fixed Versions

Affected: <= 2026.3.24
Patched: >= 2026.3.28
Latest stable 2026.3.28 contains the fix.

Fix

Fixed by commit 4b9542716c (Gateway: require verified scope for chat provenance).

Credited to zpbrent.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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