{
  "cveId": "CVE-2026-69249",
  "url": "https://patchblox.com/security/cve/CVE-2026-69249",
  "summary": "CVE-2026-69249 is fixed in 3 products on 1 platform, first by python3-cryptography 46.0.5-1ubuntu2.2, released August 3, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "python-cryptography: Duplicate self-signed intermediates can cause exponential path-building",
  "description": "python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 42.0.0 through 48.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents unbounded recursion and guarantees termination, an attacker-controlled certificate chain can lead the processing to easily take more than 5s to reject in testing. This amplification could form the basis for a resource exhaustion denial of service attack. The core issue arises in the recursive nature of build_chain_inner, which does not de-duplicate against previously analyzed candidates. As the correctness of validation is not affected, the integrity of a system cannot be compromised through this vector, only its availability. This issue is fixed in 49.0.0.",
  "published": "2026-08-03T15:16:00Z",
  "severity": "Important",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Uncontrolled Resource Consumption",
  "epss": 0.00262,
  "epssPercentile": 0.18041,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69249",
  "fixes": [
    {
      "platform": "linux",
      "product": "python-cryptography",
      "release": "Debian 14",
      "fixedVersion": "49.0.0-1",
      "fix": "DEBIAN-CVE-2026-69249",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-69249",
      "released": "2026-08-22T23:48:30Z"
    },
    {
      "platform": "linux",
      "product": "python-cryptography",
      "release": "RHEL 10",
      "fixedVersion": "43.0.0-4.el10_0.1",
      "fix": "RHSA-2026:71659",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-71659",
      "released": "2026-08-03T21:26:45Z"
    },
    {
      "platform": "linux",
      "product": "python-cryptography",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "44.0.3-160000.5.1",
      "fix": "OPENSUSE-SU-2026:21685-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21685-1",
      "released": "2026-08-30T14:35:57Z"
    },
    {
      "platform": "linux",
      "product": "python-cryptography",
      "release": "rocky 10",
      "fixedVersion": "0:43.0.0-4.el10_2.5",
      "fix": "RLSA-2026:71658",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-71658",
      "released": "2026-09-26T12:12:16Z"
    },
    {
      "platform": "linux",
      "product": "python-cryptography",
      "release": "sles 16.0",
      "fixedVersion": "44.0.3-160000.5.1",
      "fix": "SUSE-SU-2026:23570-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23570-1",
      "released": "2026-08-30T14:38:11Z"
    },
    {
      "platform": "linux",
      "product": "python3-cryptography",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "46.0.5-1ubuntu2.2",
      "fix": "python3-cryptography 46.0.5-1ubuntu2.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-python3-cryptography-46.0.5-1ubuntu2.2",
      "released": "2026-08-03T15:16:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-cryptography",
      "release": "almalinux 10",
      "fixedVersion": "43.0.0-4.el10_2.5",
      "fix": "ALSA-2026:71658",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-71658",
      "released": "2026-09-24T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-cryptography",
      "release": "ol 10",
      "fixedVersion": "0:43.0.0-4.el10_2.5",
      "fix": "ELSA-2026-71658",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-71658",
      "released": "2026-09-25T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3.14-cryptography",
      "release": "RHEL 10",
      "fixedVersion": "45.0.4-4.el10_2.5",
      "fix": "RHSA-2026:64795",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-64795",
      "released": "2026-08-03T21:26:45Z"
    },
    {
      "platform": "linux",
      "product": "python3.14-cryptography",
      "release": "RHEL 9",
      "fixedVersion": "0:45.0.4-4.el9_8.6",
      "fix": "RHSA-2026:64774",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-64774",
      "released": "2026-09-13T12:48:01Z"
    },
    {
      "platform": "linux",
      "product": "python3.14-cryptography",
      "release": "almalinux 10",
      "fixedVersion": "45.0.4-4.el10_2.5",
      "fix": "ALSA-2026:64795",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-64795",
      "released": "2026-09-08T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3.14-cryptography",
      "release": "almalinux 9",
      "fixedVersion": "45.0.4-4.el9_8.6",
      "fix": "ALSA-2026:64774",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-64774",
      "released": "2026-09-08T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3.14-cryptography",
      "release": "ol 10",
      "fixedVersion": "0:45.0.4-4.el10_2.5",
      "fix": "ELSA-2026-64795-0",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-64795-0",
      "released": "2026-09-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3.14-cryptography",
      "release": "ol 9",
      "fixedVersion": "0:45.0.4-4.el9_8.6",
      "fix": "ELSA-2026-64774-0",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-64774-0",
      "released": "2026-09-08T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3.14-cryptography",
      "release": "rocky 10",
      "fixedVersion": "0:45.0.4-4.el10_2.5",
      "fix": "RLSA-2026:64795",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-64795",
      "released": "2026-09-09T12:09:16Z"
    },
    {
      "platform": "linux",
      "product": "python3.14-cryptography",
      "release": "rocky 9",
      "fixedVersion": "0:45.0.4-4.el9_8.6",
      "fix": "RLSA-2026:64774",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-64774",
      "released": "2026-09-09T12:05:17Z"
    }
  ],
  "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"
  }
}