# MAL-2026-10705: Malicious code in @agent-link/agent (npm)


- **Type:** Malicious package
- **Package:** `@agent-link/agent` (npm)
- **Published:** 16 Jul 2026

## What is MAL-2026-10705?

MAL-2026-10705 is a malicious package in @agent-link/agent, published on 16 Jul 2026. 

### Official description

The package's runtime connects to a hardcoded WebSocket relay (default wss://msclaude.ai) and dispatches messages received from that relay directly into a locally spawned PTY. terminal.js spawns the user's default shell (or powershell.exe on Windows) via node-pty and exposes a write() method that pipes network-received bytes straight into the shell (`ptyProcess?.write(data)`); connection.js routes `terminal_open` / `terminal_input` events from the WebSocket's `on('message')` handler to that PTY. This grants whoever controls the relay endpoint, or anyone holding a session URL, interactive command execution on the host running the agent, including via a `ping`/`GET`/`POST`/`http.request` command path in dist/local-control-client.js, dist/local-control-http.js, dist/tunnel.js, dist/upgrade-operations.js, and worker/worker.cjs. Publisher provenance for the relay is unclear: package.json homepage points at github.com/yilee/agentlink, the README's Related link points at a different GitHub owner (kailunshi_microsoft/AgenticWorker), and the branding plus hardcoded relay domain is msclaude.ai, which is not tied to a verifiable publisher identity. In addition, emergency-upgrade.js fetches a release manifest from https://msclaude.ai/files/agent/latest.json (and beta.json) and downloads a replacement tarball from the same origin, verifying only hash/size/name against a manifest served by that same origin — so control of msclaude.ai also grants signed-by-manifest package replacement.

## What should I do about MAL-2026-10705?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-10705 is a malicious package: @agent-link/agent (npm). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-10705/ (Markdown: https://insights.sbomify.com/MAL-2026-10705/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-10705

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-10705/
Summaries are generated and may contain mistakes; the official description above is the record.