{
 "id": "CVE-2026-58616",
 "description": "Concurrent execution using shared resource with improper synchronization ('race condition') in Copilot Chat (Microsoft Edge) allows an authorized attacker to disclose information over a network.",
 "published": "2026-08-28",
 "last_modified": "2026-09-11",
 "vuln_status": "Analyzed",
 "cna": "secure@microsoft.com",
 "cvss": {
  "version": "3.1",
  "score": 3,
  "severity": "LOW",
  "vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N",
  "source": "nvd@nist.gov"
 },
 "cwe": [
  "CWE-362"
 ],
 "products": [
  {
   "vendor": "microsoft",
   "product": "edge_chromium",
   "versions_affected": "< 152.0.4191.53",
   "fixed_in": "152.0.4191.53",
   "product_id": null
  }
 ],
 "category": "product",
 "surface": [
  "exfiltration"
 ],
 "kev": null,
 "fix": {
  "status": "fixed",
  "version": "152.0.4191.53",
  "url": null
 },
 "references": [
  {
   "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58616",
   "source": "secure@microsoft.com",
   "tags": [
    "Vendor Advisory"
   ]
  }
 ],
 "related_agents": [
  "github-microsoft-github-copilot-coding-agent"
 ],
 "related_incidents": [],
 "match": {
  "tests": [
   "A:name"
  ],
  "terms": [
   "github-copilot:Copilot Chat"
  ]
 },
 "status": "candidate",
 "note": null,
 "reviewer": null,
 "checked_on": null,
 "retrieved_on": "2026-10-25"
}