use after free in SMB connection reuse

{
  "id": "a1b24679f22e22eb3e03057904cafd3fe90630e79b96aaf670f4bf06b9298e7f",
  "url": "https://osv.dev/vulnerability/CURL-CVE-2026-3805",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "use after free in SMB connection reuse",
    "summary": "When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory.",
    "evidence": "osv:CURL-CVE-2026-3805",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CURL-CVE-2026-3805",
      "aliases": [
        "CURL-CVE-2026-3805",
        "CVE-2026-3805"
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          "ranges": [
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              "type": "SEMVER",
              "events": [
                {
                  "introduced": "8.13.0"
                },
                {
                  "fixed": "8.14.2"
                },
                {
                  "introduced": "8.15.0"
                },
                {
                  "fixed": "8.16.1"
                },
                {
                  "introduced": "8.17.0"
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                {
                  "fixed": "8.19.0"
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            {
              "repo": "https://github.com/curl/curl.git",
              "type": "GIT",
              "events": [
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                  "fixed": "e090be9f73a7a71459ef678c7cc4b1f75e3ea883"
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            "rc-8_18_0-1",
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            "curl-8_16_0",
            "curl-8_15_0",
            "curl-8_14_1",
            "curl-8_14_0",
            "curl-8_13_0"
          ],
          "database_specific": {
            "source": "https://curl.se/docs/CURL-CVE-2026-3805.json",
            "vanir_signatures": [
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                "id": "CURL-CVE-2026-3805-2ab8a3de",
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                "source": "https://github.com/curl/curl.git/commit/e090be9f73a7a71459ef678c7cc4b1f75e3ea883",
                "target": {
                  "file": "lib/smb.c",
                  "function": "smb_parse_url_path"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
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                "id": "CURL-CVE-2026-3805-8d0d6de0",
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                "source": "https://github.com/curl/curl.git/commit/e090be9f73a7a71459ef678c7cc4b1f75e3ea883",
                "target": {
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                "target": {
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            "vanir_signatures_modified": "2026-10-25T01:05:18Z"
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      ],
      "modified": "2026-10-25T01:05:18.561428949Z",
      "provider": "osv",
      "references": [],
      "provider_metadata": {
        "CWE": {
          "id": "CWE-416",
          "desc": "Use After Free"
        },
        "URL": "https://curl.se/docs/CVE-2026-3805.json",
        "www": "https://curl.se/docs/CVE-2026-3805.html",
        "issue": "https://hackerone.com/reports/3591944",
        "affects": "both",
        "package": "curl",
        "severity": "Medium",
        "last_affected": "8.18.0"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-3805",
        "evidence": "/aliases"
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    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 444370,
  "published_at": "2026-03-11T08:00:00+00:00"
}