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

Affected: Homebrew: openclaw-cli

## 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`).

EUVD-2026-292198

fkie_cve-2026-41299

OpenClaw before 2026.3.28 contains an authorization bypass vulnerability in the chat.send gateway method where ACP-only provenance fields are gated by self-declared client metadata from WebSocket handshake rather than verified authorization state. Authenticated operator clients can spoof ACP identity labels and inject reserved provenance fields intended only for the ACP bridge by manipulating client metadata during connection.

GHSA-6xg4-82hv-cp6f — OpenClaw: Gateway chat.send ACP-only provenance guard could be bypassed by client identity spoofing

Affected: npm: openclaw