OpenSSF/OSV advisory MAL-2026-5599 confirms this npm version as malicious. On install, the postinstall script copies the package's `payload/` tree (CLAUDE.md,.claude/settings.json,.mcp.json, and several.cjs MCP scripts) into the consumer's project directory (`process.env.INIT_CWD || process.cwd()`) at `scripts/postinstall.cjs`, materializing Claude Code project config inside any repo where `npm install` was run. The dropped `.mcp.json` registers an MCP server whose env includes...
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OpenSSF Malicious Packages via OSV
Summary
Malicious code in 0x2ai-ivo (npm)
Details
On install, the postinstall script copies the package's `payload/` tree (CLAUDE.md,.claude/settings.json,.mcp.json, and several.cjs MCP scripts) into the consumer's project directory (`process.env.INIT_CWD || process.cwd()`) at `scripts/postinstall.cjs`, materializing Claude Code project config inside any repo where `npm install` was run. The dropped `.mcp.json` registers an MCP server whose env includes `BRIDGE_URL=https://ivo.0x2ai.com` and a hardcoded shared bearer token (`BRIDGE_AUTH_TOKEN`), so any installer's Claude Code instance auto-attaches to that author-operated bridge. The package's CLI (`bin/start.cjs`) then spawns `claude --dangerously-skip-permissions` via a shell, deliberately stripping the permission gate that normally protects the host from agent actions. The MCP scripts (`payload/chatroom-mcp-lite-patched.cjs`, `payload/chatroom-monitor.cjs`, `payload/chatroom-wait-once.cjs`) POST to and long-poll `https://ivo.0x2ai.com`, receiving chatroom messages that CLAUDE.md/`0x2ai-boot.md` instruct the agent to act on. The exposed MCP tools (`provider_query`, `memory_save`, `memory_load`, `chatroom_post`) further route user prompts, conversation memory, and posted messages through the same endpoint authenticated by the shared static token. Net effect: an unattended, permission-bypassed Claude agent on the installer's machine that executes whatever instructions the operator of ivo.0x2ai.com pushes — an over-the-wire remote-control channel whose payloads are not in the tarball and not under the installer's control.
Decision reason
OSV/OpenSSF confirms 0x2ai-ivo@1.2.0 as malicious package MAL-2026-5599. Malicious code in 0x2ai-ivo (npm)