{
 "public_id": "AIR-2025-0104",
 "incident_id": "2025-08-lenovo-lena-stored-xss",
 "date_disclosed": "2025-08-18",
 "date_occurred": null,
 "title": "Prompt injection in Lenovo's 'Lena' chatbot yields stored XSS that steals a support agent's session cookie",
 "class": "responsible_disclosure",
 "attack_surface": "consumer_chatbot",
 "initial_vector": "direct_prompt_injection_user_input",
 "agent_capability_abused": [
  "html_output_rendering",
  "chat_transcript_persistence"
 ],
 "target_product": "Lenovo AI chatbot 'Lena'",
 "target_vendor": "Lenovo",
 "autonomy_level": "assistant",
 "impact_realized": false,
 "impact_type": [
  "session_hijack",
  "data_exfiltration"
 ],
 "blast_radius": "Lenovo customer-support platform accounts and the customer conversations they can see",
 "cve": [],
 "taxonomy": {
  "owasp_asi": [
   "ASI01",
   "ASI03"
  ],
  "mitre_atlas": [
   "AML.CS0060"
  ],
  "labels": [
   "stored_xss",
   "llm_output_handling",
   "human_in_the_loop_as_victim"
  ]
 },
 "defense_present": "output sanitisation (absent)",
 "defense_bypassed": true,
 "fix_shipped": "Lenovo reported corrective actions",
 "primary_sources": [
  "https://raw.githubusercontent.com/mitre-atlas/atlas-data/main/dist/v6/ATLAS-2026.07.yaml"
 ],
 "verified_quote": "The response was saved in the user's chat history, creating a stored cross-site scripting (XSS) payload. When the researchers requested transfer to a human support agent, the agent's normal workflow of opening the chat transcript caused the poisoned content to render, exfiltrating session cookie data to an attacker-controlled server.",
 "confidence": "medium",
 "notes": "Cybernews research team. The quote is from MITRE ATLAS's published data file rather than the Cybernews article. Borderline for scope: the chatbot emits text, but the downstream effect (session theft against a human operator) is concrete.",
 "risk_category": "privacy",
 "risk_secondary": [],
 "risk_subcategory": "Data Exfiltration via Context",
 "risk_sub_secondary": [],
 "ai_entity": "generative",
 "agency": "agent_acted",
 "agency_debatable": true,
 "agency_reason": "the rendered chatbot output executed and stole the support agent's cookie",
 "vector_family": "direct_prompt_injection",
 "vector_detail": "direct_prompt_injection_user_input",
 "guardrail_kind": [
  "unknown"
 ],
 "guardrail_outcome": "silent",
 "xrefs": {
  "aiid": [],
  "atlas": [
   "AML.CS0060"
  ],
  "cve": [],
  "ghsa": []
 },
 "primary_asi": "ASI01",
 "agent_framework": "unknown",
 "model_provider": "unknown",
 "model_name": "",
 "detection_mechanism": "unknown",
 "tool_access": "unknown",
 "financial_loss_band": "unknown",
 "eai_category": "data_exfiltration_channels",
 "eai_domain": "privacy",
 "eai_secondary": [],
 "eai_reason": "subcategory: Data Exfiltration via Context",
 "asi_curated": [
  "ASI01"
 ],
 "asi_scope": "in_scope",
 "asi_provenance": "curated_plus_rule",
 "asi_reason": "curated: ASI01 | added ASI03 (signal=identity)",
 "submitted_by": "EAI Internal"
}