{
  "cveId": "CVE-2026-40611",
  "url": "https://patchblox.com/security/cve/CVE-2026-40611",
  "summary": "CVE-2026-40611 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-40611, released April 21, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "golang-github-xenolf-lego: Let\u0027s Encrypt client and ACME library written in Go (Lego)",
  "description": "Let\u0027s Encrypt client and ACME library written in Go (Lego). Prior to 4.34.0, the webroot HTTP-01 challenge provider in lego is vulnerable to arbitrary file write and deletion via path traversal. A malicious ACME server can supply a crafted challenge token containing ../ sequences, causing lego to write attacker-influenced content to any path writable by the lego process. This vulnerability is fixed in 4.34.0.",
  "published": "2026-04-21T18:16:52Z",
  "severity": "high",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
  "epss": 0.00418,
  "epssPercentile": 0.36413,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "golang-github-xenolf-lego",
      "release": "Debian 14",
      "fixedVersion": "4.35.2-1",
      "fix": "DEBIAN-CVE-2026-40611",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40611",
      "released": "2026-04-21T18:16:52Z"
    },
    {
      "platform": "linux",
      "product": "govulncheck-vulndb",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "0.0.20260727T201416-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21551-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21551-1",
      "released": "2026-08-10T17:38:07Z"
    },
    {
      "platform": "linux",
      "product": "govulncheck-vulndb",
      "release": "sles 16.0",
      "fixedVersion": "0.0.20260727T201416-160000.1.1",
      "fix": "SUSE-SU-2026:23227-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23227-1",
      "released": "2026-08-10T17:34:15Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}