{
  "cveId": "CVE-2025-40923",
  "url": "https://patchblox.com/security/cve/CVE-2025-40923",
  "summary": "CVE-2025-40923 is fixed in libplack-middleware-session-perl on 1 platform by DEBIAN-CVE-2025-40923 (version 0.36-1), released July 16, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "libplack-middleware-session-perl: Plack-Middleware-Session before version 0.35 for Perl generates session ids insecurely",
  "description": "Plack-Middleware-Session before version 0.35 for Perl generates session ids insecurely.  The default session id generator returns a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.  Predicable session ids could allow an attacker to gain access to systems.",
  "published": "2025-07-16T13:15:23Z",
  "severity": "high",
  "cvss": 7.3,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
  "epss": 0.0039,
  "epssPercentile": 0.33368,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libplack-middleware-session-perl",
      "release": "Debian 14",
      "fixedVersion": "0.36-1",
      "fix": "DEBIAN-CVE-2025-40923",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40923",
      "released": "2025-07-16T13:15:23Z"
    }
  ],
  "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"
  }
}