{
  "cveId": "CVE-2026-34582",
  "url": "https://patchblox.com/security/cve/CVE-2026-34582",
  "summary": "CVE-2026-34582 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-34582, released April 7, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "botan3: Botan is a C\u002B\u002B cryptography library",
  "description": "Botan is a C\u002B\u002B cryptography library. Prior to version 3.11.1, the TLS 1.3 implementation allowed ApplicationData records to be processed prior to the Finished message being received. A server which is attempting to enforce client authentication via certificates can by bypassed by a client which entirely omits Certificate, CertificateVerify, and the Finished message and instead sends application data records. This vulnerability is fixed in 3.11.1.",
  "published": "2026-04-07T22:16:22Z",
  "severity": "critical",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "epss": 0.00242,
  "epssPercentile": 0.15488,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "Botan",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "3.7.1-160000.3.1",
      "fix": "OPENSUSE-SU-2026:20528-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20528-1",
      "released": "2026-04-14T11:18:14Z"
    },
    {
      "platform": "linux",
      "product": "botan3",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "3.11.0\u002Bdfsg-2",
      "fix": "DEBIAN-CVE-2026-34582",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-34582",
      "released": "2026-04-07T22:16:22Z"
    },
    {
      "platform": "linux",
      "product": "botan3",
      "release": "Debian 14",
      "fixedVersion": "3.11.0\u002Bdfsg-2",
      "fix": "DEBIAN-CVE-2026-34582",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-34582",
      "released": "2026-04-07T22:16:22Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}