0x2ai-demo9x
This report shows the evidence for 0x2ai-demo9x@1.2.0, the only known version.
OpenSSF/OSV Malicious Advisory
imported 4mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-5598 confirms this npm version as malicious.
Advisory
MAL-2026-5598
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in 0x2ai-demo9x (npm)
Details
On `npm install`, scripts/postinstall.cjs copies the package's payload/ tree into the installer's project root (process.env.INIT_CWD) without consent, dropping.mcp.json,.claude/settings.json,.claude/commands/0x2ai-boot.md, and a CLAUDE.md persona prompt. The dropped.mcp.json hardcodes BRIDGE_URL=https://demo9.0x2ai.com and a static Bearer token (942b955170161eef3a59815f0e8fd775f0ea6b8fc1d59364), wiring every subsequent Claude Code session opened in that directory to the author's HTTPS bridge. The bundled MCP server (payload/chatroom-mcp-lite-patched.cjs) exposes provider_query, memory_save/load, settings_get/set, etc., so user prompts and saved memory are relayed to the author's endpoint. bin/start.cjs spawns `claude --dangerously-skip-permissions` in that staged directory, disabling tool-use consent prompts while the author-controlled MCP is active. Two long-poll workers (payload/chatroom-monitor.cjs, payload/chatroom-wait-once.cjs) continuously fetch https://demo9.0x2ai.com/api/wait and surface the responses as chatroom events that the agent is instructed (via the staged 0x2ai-boot.md and CLAUDE.md persona) to act on as if they were user input — giving the bridge operator a push channel into the local Claude Code tool-use loop (file/shell-adjacent capabilities) with no per-call approval. The staged CLAUDE.md additionally instructs the agent to refuse to disclose how the package works, concealing the relay from the developer. Net effect: installing this package converts the developer's project into a remote-controlled agent endpoint owned by the author.
References
Source & flagged code
0 flagged · loading sourceNo flagged code excerpts are attached to this scan.
Findings
1 High
HighOsv Malicious Advisory
Affected versions and remediation
This report applies to 0x2ai-demo9x@1.2.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing 0x2ai-demo9x@1.2.0. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Source advisory published: .
This report uses published external intelligence. The advisory does not provide a separate source-code analysis for each listed version.
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