{
 "id": "AIR-2026-1048",
 "slug": "langchain-langchain-openai-toctou-dns-rebinding-vulnerabilit",
 "title": "LangChain langchain-openai TOCTOU DNS rebinding vulnerability",
 "summary": "A time-of-check to time-of-use DNS rebinding vulnerability existed in langchain-openai's image token counting function. The flaw allowed SSRF bypasses during separate network resolution steps.",
 "type": "attack_on_ai",
 "categories": [
  "infra_vuln"
 ],
 "severity": 2,
 "targets": [
  "framework_or_tooling"
 ],
 "products": [
  "LangChain",
  "langchain-openai"
 ],
 "incident_date": "2026-04-24",
 "incident_date_precision": "day",
 "first_reported": "2026-04-24",
 "sources": [
  {
   "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41488",
   "publisher": "NVD",
   "title": "CVE-2026-41488: LangChain is a framework for building agents and LLM-powered applications.",
   "published_at": "2026-04-24"
  }
 ],
 "source_count": 1,
 "confidence": 0.95,
 "status": "published",
 "origin": "seed_nvd",
 "tags": [
  "CVE-2026-41488",
  "ssrf",
  "dns-rebinding",
  "langchain"
 ],
 "created_at": "2026-10-18T10:04:21.885Z",
 "updated_at": "2026-10-18T10:04:21.885Z"
}