{
  "cveId": "CVE-2026-41564",
  "url": "https://patchblox.com/security/cve/CVE-2026-41564",
  "summary": "CVE-2026-41564 is fixed in 5 products on 1 platform, first by ALAS2023-2026-1641, released May 11, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "libcryptx-perl: CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking",
  "description": "CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking.  The Crypt::PK::RSA, Crypt::PK::DSA, Crypt::PK::DH, Crypt::PK::ECC, Crypt::PK::Ed25519 and Crypt::PK::X25519 modules seed a per-object PRNG state in their constructors and reuse it without fork detection. A Crypt::PK::* object created before \u0060fork()\u0060 shares byte-identical PRNG state with every child process, and any randomized operation they perform can produce identical output, including key generation. Two ECDSA or DSA signatures from different processes are enough to recover the signing private key through nonce-reuse key recovery.  This affects preforking services such as the Starman web server, where a Crypt::PK::* object loaded at startup is inherited by every worker process.",
  "published": "2026-04-23T08:16:01Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
  "epss": 0.00431,
  "epssPercentile": 0.37511,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libcryptx-perl",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "0.085-1\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2026-41564",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-41564",
      "released": "2026-05-15T16:01:09Z"
    },
    {
      "platform": "linux",
      "product": "libcryptx-perl",
      "release": "Debian 14",
      "fixedVersion": "0.087-2",
      "fix": "DEBIAN-CVE-2026-41564",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-41564",
      "released": "2026-05-15T16:01:09Z"
    },
    {
      "platform": "linux",
      "product": "perl-CryptX",
      "release": "amzn 2023",
      "fixedVersion": "0.088-2.amzn2023.0.1",
      "fix": "ALAS2023-2026-1641",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1641",
      "released": "2026-05-11T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-CryptX",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "0.89.0-bp160.1.1",
      "fix": "OPENSUSE-SU-2026:20936-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20936-1",
      "released": "2026-06-10T11:48:58Z"
    },
    {
      "platform": "linux",
      "product": "perl-CryptX-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "0.088-2.amzn2023.0.1",
      "fix": "ALAS2023-2026-1641",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1641",
      "released": "2026-05-11T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-CryptX-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "0.088-2.amzn2023.0.1",
      "fix": "ALAS2023-2026-1641",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1641",
      "released": "2026-05-11T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-CryptX-tests",
      "release": "amzn 2023",
      "fixedVersion": "0.088-2.amzn2023.0.1",
      "fix": "ALAS2023-2026-1641",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1641",
      "released": "2026-05-11T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}