{
 "public_id": "AIR-2026-0015",
 "incident_id": "2026-01-koi-maliciouscorgi-ai-extensions",
 "date_disclosed": "2026-01-22",
 "date_occurred": null,
 "title": "MaliciousCorgi: AI coding-assistant extensions silently exfiltrating source from 1.5 million developers",
 "class": "in_the_wild",
 "attack_surface": "skill_plugin",
 "initial_vector": "malicious_marketplace_package",
 "agent_capability_abused": [
  "workspace_file_access",
  "file_open_hooks",
  "server_driven_commands",
  "file_read",
  "editor_context_capture",
  "network_egress"
 ],
 "target_product": "VS Code extensions 'ChatGPT - Chinese version' (WhenSunset) and 'ChatMoss / CodeMoss' (zhukunpeng)",
 "target_vendor": "third-party publishers",
 "autonomy_level": "assistant",
 "impact_realized": true,
 "impact_type": [
  "source_code_exfiltration",
  "behavioral_profiling",
  "data_exfiltration",
  "credential_theft",
  "ip_theft"
 ],
 "blast_radius": "1.35 million and 150,000 installs respectively; both still live at publication",
 "cve": [],
 "taxonomy": {
  "owasp_asi": [
   "ASI04",
   "ASI05",
   "ASI02"
  ],
  "mitre_atlas": [],
  "labels": [
   "supply_chain",
   "ide_extension",
   "mass_exfiltration",
   "in_the_wild",
   "marketplace_vetting_failure",
   "source_code_exfiltration"
  ]
 },
 "defense_present": "Microsoft VS Code Marketplace review",
 "defense_bypassed": true,
 "fix_shipped": "None recorded; marketplace response not addressed in the post",
 "primary_sources": [
  "https://www.koi.ai/blog/maliciouscorgi-the-cute-looking-ai-extensions-leaking-code-from-1-5-million-developers"
 ],
 "verified_quote": "The moment you open any file - not interact with it, just open it - the extension reads its entire contents, encodes it as Base64, and sends it to a webview containing a hidden tracking iframe.",
 "confidence": "high",
 "notes": "Author Tuval Admoni (Koi). Three exfiltration channels: real-time file monitoring, server-commanded mass harvest of up to 50 files, and a four-SDK profiling engine. impact_realized true because active exfiltration from installed users is described as ongoing. Quote's em-dashes normalized to hyphens. Also reported as: 'MaliciousCorgi: two AI coding extensions with 1.5M installs exfiltrated developer files from the VS Code Marketplace'.",
 "risk_category": "security_fraud",
 "risk_secondary": [
  "privacy"
 ],
 "risk_subcategory": "Supply Chain Compromise",
 "risk_sub_secondary": [
  "Credential & Secret Theft"
 ],
 "ai_entity": "generative",
 "agency": "ai_as_target",
 "agency_debatable": true,
 "agency_reason": "malicious IDE extensions harvested source; the exfil code is not the AI",
 "vector_family": "malicious_component",
 "vector_detail": "malicious_marketplace_package",
 "guardrail_kind": [
  "unknown"
 ],
 "guardrail_outcome": "silent",
 "xrefs": {
  "aiid": [],
  "atlas": [],
  "cve": [],
  "ghsa": []
 },
 "primary_asi": "ASI04",
 "agent_framework": "unknown",
 "model_provider": "openai",
 "model_name": "",
 "detection_mechanism": "external_researcher",
 "tool_access": "unknown",
 "financial_loss_band": "unknown",
 "eai_category": "supply_chain_vulnerabilities",
 "eai_domain": "tool_misuse",
 "eai_secondary": [
  "credential_theft",
  "data_exfiltration_channels"
 ],
 "eai_reason": "subcategory: Supply Chain Compromise",
 "asi_curated": [
  "ASI04",
  "ASI05"
 ],
 "asi_scope": "in_scope",
 "asi_provenance": "curated_plus_rule",
 "asi_reason": "curated: ASI04,ASI05 | added ASI02 (impact=tool_misuse)",
 "submitted_by": "EAI Internal"
}