{
 "public_id": "AIR-2026-0148",
 "incident_id": "2026-07-vlex-vincent-ai-screen-takeover",
 "date_disclosed": "2026-07",
 "date_occurred": null,
 "title": "Screen-takeover in vLex Vincent AI: injected document makes the legal-research agent render an attacker-controlled HTML login popup",
 "class": "responsible_disclosure",
 "attack_surface": "enterprise_assistant",
 "initial_vector": "indirect_prompt_injection_document_hidden_text",
 "agent_capability_abused": [
  "document_parsing",
  "unsanitized_html_output_rendering"
 ],
 "target_product": "Vincent AI (vLex legal research platform)",
 "target_vendor": "vLex (acquired by Clio)",
 "autonomy_level": "assistant",
 "impact_realized": false,
 "impact_type": [
  "credential_theft",
  "ui_spoofing",
  "data_exfiltration"
 ],
 "blast_radius": "Vincent AI users who upload documents from opposing parties or third parties",
 "cve": [],
 "taxonomy": {
  "owasp_asi": [
   "ASI01",
   "ASI02"
  ],
  "mitre_atlas": [],
  "labels": [
   "ui_takeover",
   "phishing_overlay",
   "html_injection",
   "hidden_text",
   "legal_sector"
  ]
 },
 "defense_present": "none - model output rendered without HTML sanitization",
 "defense_bypassed": true,
 "fix_shipped": "fixed before publication in line with PromptArmor's recommendations",
 "primary_sources": [
  "https://www.promptarmor.com/resources/screen-takeover-attack-in-ai-tool-acquired-for-1b"
 ],
 "verified_quote": "A prompt injection concealed in an uploaded document can manipulate Vincent AI into responding to the user with HTML code, resulting in a malicious attacker-controlled login pop-up being displayed to the user.",
 "confidence": "high",
 "notes": "PROVENANCE CAVEAT: the page states no publication date; 2026-07 in the incident_id is provisional and date_disclosed is left null. PromptArmor. Legal-sector agent; the writeup notes further potential for JavaScript execution, session token theft, forced downloads and cryptomining. | date_disclosed is recorded to the month only; no source establishes the exact day.",
 "risk_category": "security_fraud",
 "risk_secondary": [
  "privacy"
 ],
 "risk_subcategory": "Prompt Injection",
 "risk_sub_secondary": [
  "Credential & Secret Theft"
 ],
 "ai_entity": "generative",
 "agency": "agent_acted",
 "agency_debatable": false,
 "agency_reason": "the legal agent rendered the attacker's HTML login popup",
 "vector_family": "indirect_prompt_injection",
 "vector_detail": "indirect_prompt_injection_document_hidden_text",
 "guardrail_kind": [
  "none"
 ],
 "guardrail_outcome": "not_applicable",
 "xrefs": {
  "aiid": [],
  "atlas": [],
  "cve": [],
  "ghsa": []
 },
 "primary_asi": "ASI01",
 "agent_framework": "unknown",
 "model_provider": "unknown",
 "model_name": "",
 "detection_mechanism": "external_researcher",
 "tool_access": "unknown",
 "financial_loss_band": "unknown",
 "eai_category": "data_exfiltration_channels",
 "eai_domain": "privacy",
 "eai_secondary": [
  "credential_theft",
  "confused_deputy"
 ],
 "eai_reason": "impact rule: data_exfiltration_channels",
 "asi_curated": [
  "ASI01"
 ],
 "asi_scope": "in_scope",
 "asi_provenance": "curated_plus_rule",
 "asi_reason": "curated: ASI01 | added ASI02 (impact=tool_misuse)",
 "submitted_by": "EAI Internal"
}