{
  "cveId": "CVE-2026-59639",
  "url": "https://patchblox.com/security/cve/CVE-2026-59639",
  "summary": "CVE-2026-59639 is fixed in 7 products on 1 platform, first by DEBIAN-CVE-2026-59639, released August 3, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "bouncycastle: In Bouncy Castle for Java before 1.85, CMS verifySignatures returns true for SignedData with zero signers",
  "description": "In Bouncy Castle for Java before 1.85, CMS verifySignatures returns true for SignedData with zero signers. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (2.1.X series).",
  "published": "2026-08-03T01:16:43Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
  "epss": 0.00242,
  "epssPercentile": 0.15415,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bouncycastle",
      "release": "Debian 14",
      "fixedVersion": "1.86-1",
      "fix": "DEBIAN-CVE-2026-59639",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-59639",
      "released": "2026-08-03T01:16:43Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle",
      "release": "amzn 2023",
      "fixedVersion": "1.70-4.amzn2023.0.8",
      "fix": "ALAS2023-2026-2153",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2153",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.85-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21538-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21538-1",
      "released": "2026-08-06T07:36:52Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle",
      "release": "sles 15.6",
      "fixedVersion": "1.85-150200.3.38.1",
      "fix": "SUSE-SU-2026:3559-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3559-1",
      "released": "2026-08-10T18:04:57Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle",
      "release": "sles 15.7",
      "fixedVersion": "1.85-150200.3.38.1",
      "fix": "SUSE-SU-2026:3559-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3559-1",
      "released": "2026-08-10T18:04:57Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle",
      "release": "sles 16.0",
      "fixedVersion": "1.85-160000.1.1",
      "fix": "SUSE-SU-2026:23150-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23150-1",
      "released": "2026-08-06T07:40:53Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle-javadoc",
      "release": "amzn 2023",
      "fixedVersion": "1.70-4.amzn2023.0.8",
      "fix": "ALAS2023-2026-2153",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2153",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle-mail",
      "release": "amzn 2023",
      "fixedVersion": "1.70-4.amzn2023.0.8",
      "fix": "ALAS2023-2026-2153",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2153",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle-pg",
      "release": "amzn 2023",
      "fixedVersion": "1.70-4.amzn2023.0.8",
      "fix": "ALAS2023-2026-2153",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2153",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle-pkix",
      "release": "amzn 2023",
      "fixedVersion": "1.70-4.amzn2023.0.8",
      "fix": "ALAS2023-2026-2153",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2153",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle-tls",
      "release": "amzn 2023",
      "fixedVersion": "1.70-4.amzn2023.0.8",
      "fix": "ALAS2023-2026-2153",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2153",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bouncycastle-util",
      "release": "amzn 2023",
      "fixedVersion": "1.70-4.amzn2023.0.8",
      "fix": "ALAS2023-2026-2153",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2153",
      "released": "2026-09-14T09:00:00Z"
    }
  ],
  "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"
  }
}