{
 "public_id": "AIR-2025-0099",
 "incident_id": "2025-08-google-jules-invisible-injection",
 "date_disclosed": "2025-08-15",
 "date_occurred": null,
 "title": "Google Jules is vulnerable to invisible Unicode Tag prompt injection",
 "class": "responsible_disclosure",
 "attack_surface": "coding_agent",
 "initial_vector": "invisible_unicode_injection",
 "agent_capability_abused": [
  "tool_invocation",
  "code_write",
  "shell_command_execution"
 ],
 "target_product": "Google Jules",
 "target_vendor": "Google",
 "autonomy_level": "fully_autonomous",
 "impact_realized": false,
 "impact_type": [
  "remote_code_execution",
  "backdoor_insertion"
 ],
 "blast_radius": "Jules users processing GitHub issues and untrusted data",
 "cve": [],
 "taxonomy": {
  "owasp_asi": [
   "ASI01",
   "ASI05"
  ],
  "mitre_atlas": [],
  "labels": [
   "ascii_smuggling",
   "unicode_tags",
   "invisible_instructions"
  ]
 },
 "defense_present": "plan review by the user",
 "defense_bypassed": true,
 "fix_shipped": "not fixed at publication; first reported to Google 2024-02-22, accepted but unmitigated, and Jules went GA without remediation",
 "primary_sources": [
  "https://embracethered.com/blog/posts/2025/google-jules-invisible-prompt-injection/"
 ],
 "verified_quote": "The latest Gemini models quite reliably interpret hidden Unicode Tag characters as instructions.",
 "confidence": "high",
 "notes": "Month of AI Bugs 2025.",
 "risk_category": "security_fraud",
 "risk_secondary": [],
 "risk_subcategory": "Prompt Injection",
 "risk_sub_secondary": [
  "Supply Chain Compromise",
  "Remote Code Execution & Sandbox Escape"
 ],
 "ai_entity": "generative",
 "agency": "agent_acted",
 "agency_debatable": false,
 "agency_reason": "Jules acted on invisible Unicode instructions and wrote a backdoor",
 "vector_family": "indirect_prompt_injection",
 "vector_detail": "invisible_unicode_injection",
 "guardrail_kind": [
  "unknown"
 ],
 "guardrail_outcome": "silent",
 "xrefs": {
  "aiid": [],
  "atlas": [],
  "cve": [],
  "ghsa": []
 },
 "primary_asi": "ASI01",
 "agent_framework": "unknown",
 "model_provider": "google",
 "model_name": "",
 "detection_mechanism": "external_researcher",
 "tool_access": "unknown",
 "financial_loss_band": "unknown",
 "eai_category": "privilege_escalation",
 "eai_domain": "access_control_and_permissions",
 "eai_secondary": [
  "supply_chain_vulnerabilities"
 ],
 "eai_reason": "impact rule: privilege_escalation",
 "asi_curated": [
  "ASI01"
 ],
 "asi_scope": "in_scope",
 "asi_provenance": "curated_plus_rule",
 "asi_reason": "curated: ASI01 | added ASI05 (impact=code_exec)",
 "submitted_by": "EAI Internal"
}