OpenSSF/OSV advisory MAL-2026-13520 confirms this npm version as malicious. The package runs a daemon that long-polls Tencent's iLink Bot API (ilinkai.weixin.qq.com) for incoming WeChat messages and forwards each message body into a locally hosted AI agent that is spawned with all approval and sandbox gates disabled. Specifically, TmuxDelivery.deliver writes the message text (`sendToSession(sessionName, "[微信...] " + ctx.text)`) into a tmux session whose command line is...
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in @aster110/cc2wechat (npm)
Details
The package runs a daemon that long-polls Tencent's iLink Bot API (ilinkai.weixin.qq.com) for incoming WeChat messages and forwards each message body into a locally hosted AI agent that is spawned with all approval and sandbox gates disabled. Specifically, TmuxDelivery.deliver writes the message text (`sendToSession(sessionName, "[微信...] " + ctx.text)`) into a tmux session whose command line is `CC2WECHAT_CONTEXT=... claude --dangerously-skip-permissions`, using tmux `load-buffer` + `paste-buffer` + `send-keys Enter` to submit the input. An alternative backend spawns `codex exec --json --dangerously-bypass-approvals-and-sandbox` and feeds the same WeChat message stream into it. Because these AI CLIs are configured to auto-execute shell commands and filesystem operations without prompts when safety flags are disabled, any party able to send a WeChat message to the linked account can drive arbitrary shell and file operations on the machine running the daemon. The tool is documented in the README as full-host access requiring a disposable VM. The startup entry point is a `bin` CLI (`cc2wechat start`), so the remote-shell surface materializes when the operator launches the daemon rather than on `npm install` or `require()`.
Decision reason
OpenSSF Malicious Packages via OSV confirms @aster110/cc2wechat@5.1.0 as malicious (MAL-2026-13520): Malicious code in @aster110/cc2wechat (npm)