{
  "cveId": "CVE-2026-40194",
  "url": "https://patchblox.com/security/cve/CVE-2026-40194",
  "summary": "CVE-2026-40194 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-40194, released April 10, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "php-phpseclib: phpseclib is a PHP secure communications library",
  "description": "phpseclib is a PHP secure communications library. Starting in 0.1.1 and prior to 3.0.51, 2.0.53, and 1.0.28, phpseclib\\Net\\SSH2::get_binary_packet() uses PHP\u0027s != operator to compare a received SSH packet HMAC against the locally computed HMAC. != on equal-length binary strings in PHP uses memcmp(), which short-circuits on the first differing byte. This is a real variable-time comparison (CWE-208), proven by scaling benchmarks. This vulnerability is fixed in 3.0.51, 2.0.53, and 1.0.28.",
  "published": "2026-04-10T14:16:00Z",
  "severity": "low",
  "cvss": 3.7,
  "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
  "epss": 0.00368,
  "epssPercentile": 0.30861,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "php-phpseclib",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "2.0.42-1\u002Bdeb12u4",
      "fix": "DEBIAN-CVE-2026-40194",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40194",
      "released": "2026-04-10T21:16:27Z"
    },
    {
      "platform": "linux",
      "product": "php-phpseclib",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2.0.48-3\u002Bdeb13u2",
      "fix": "DEBIAN-CVE-2026-40194",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40194",
      "released": "2026-04-10T21:16:27Z"
    },
    {
      "platform": "linux",
      "product": "php-phpseclib",
      "release": "Debian 14",
      "fixedVersion": "2.0.53-1",
      "fix": "DEBIAN-CVE-2026-40194",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40194",
      "released": "2026-04-10T21:16:27Z"
    },
    {
      "platform": "linux",
      "product": "php-phpseclib",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.0.9-1ubuntu0.1~esm3",
      "fix": "php-phpseclib 2.0.9-1ubuntu0.1~esm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-php-phpseclib-2.0.9-1ubuntu0.1-esm3",
      "released": "2026-05-12T11:17:00Z"
    },
    {
      "platform": "linux",
      "product": "php-phpseclib",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.0.23-2ubuntu0.1~esm3",
      "fix": "php-phpseclib 2.0.23-2ubuntu0.1~esm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-php-phpseclib-2.0.23-2ubuntu0.1-esm3",
      "released": "2026-05-12T11:17:00Z"
    },
    {
      "platform": "linux",
      "product": "php-phpseclib",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.0.36-1ubuntu0.1~esm3",
      "fix": "php-phpseclib 2.0.36-1ubuntu0.1~esm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-php-phpseclib-2.0.36-1ubuntu0.1-esm3",
      "released": "2026-05-12T11:17:00Z"
    },
    {
      "platform": "linux",
      "product": "php-phpseclib",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.0.47-1ubuntu0.1~esm1",
      "fix": "php-phpseclib 2.0.47-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-php-phpseclib-2.0.47-1ubuntu0.1-esm1",
      "released": "2026-05-12T11:17:00Z"
    },
    {
      "platform": "linux",
      "product": "php-phpseclib",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "2.0.51-1ubuntu0.1~esm1",
      "fix": "php-phpseclib 2.0.51-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-php-phpseclib-2.0.51-1ubuntu0.1-esm1",
      "released": "2026-05-12T11:17:00Z"
    },
    {
      "platform": "linux",
      "product": "php-phpseclib3",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "3.0.19-1\u002Bdeb12u5",
      "fix": "DEBIAN-CVE-2026-40194",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40194",
      "released": "2026-04-10T21:16:27Z"
    },
    {
      "platform": "linux",
      "product": "php-phpseclib3",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "3.0.43-2\u002Bdeb13u2",
      "fix": "DEBIAN-CVE-2026-40194",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40194",
      "released": "2026-04-10T21:16:27Z"
    },
    {
      "platform": "linux",
      "product": "php-phpseclib3",
      "release": "Debian 14",
      "fixedVersion": "3.0.51-1",
      "fix": "DEBIAN-CVE-2026-40194",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40194",
      "released": "2026-04-10T21:16:27Z"
    },
    {
      "platform": "linux",
      "product": "phpseclib",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "1.0.20-1\u002Bdeb12u4",
      "fix": "DEBIAN-CVE-2026-40194",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40194",
      "released": "2026-04-10T21:16:27Z"
    },
    {
      "platform": "linux",
      "product": "phpseclib",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1.0.23-6\u002Bdeb13u2",
      "fix": "DEBIAN-CVE-2026-40194",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-40194",
      "released": "2026-04-10T21:16:27Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}