{
  "schema_version": "1.5.0",
  "id": "CURL-CVE-2026-3805",
  "aliases": [
    "CVE-2026-3805"
  ],
  "summary": "use after free in SMB connection reuse",
  "modified": "2026-04-25T17:48:46.00Z",
  "database_specific": {
    "package": "curl",
    "affects": "both",
    "URL": "https://curl.se/docs/CVE-2026-3805.json",
    "www": "https://curl.se/docs/CVE-2026-3805.html",
    "issue": "https://hackerone.com/reports/3591944",
    "CWE": {
      "id": "CWE-416",
      "desc": "Use After Free"
    },
    "last_affected": "8.18.0",
    "severity": "Medium"
  },
  "published": "2026-03-11T08:00:00.00Z",
  "affected": [
    {
      "ranges": [
        {
           "type": "SEMVER",
           "events": [
             {"introduced": "8.13.0"},
             {"fixed": "8.19.0"}
           ]
        },
        {
           "type": "GIT",
           "repo": "https://github.com/curl/curl.git",
           "events": [
             {"introduced": "f4831daa9b2a97e8a2921d6b62cc4dfdd0d8646e"},
             {"fixed": "e090be9f73a7a71459ef678c7cc4b1f75e3ea883"}
           ]
        }
      ],
      "versions": [
        "8.18.0", "8.17.0", "8.16.0", "8.15.0", "8.14.1", "8.14.0", "8.13.0"
      ]
    }
  ],
  "credits": [
    {
      "name": "Daniel Wade",
      "type": "FINDER"
    },
    {
      "name": "Stefan Eissing",
      "type": "REMEDIATION_DEVELOPER"
    }
  ],
  "details": "When doing a second SMB request to the same host again, curl would wrongly use\na data pointer pointing into already freed memory."
}