{
  "cveId": "CVE-2026-71847",
  "url": "https://patchblox.com/security/cve/CVE-2026-71847",
  "summary": "CVE-2026-71847 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-71847, released August 13, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "ruby-json: Ruby JSON is a JSON implementation for Ruby",
  "description": "Ruby JSON is a JSON implementation for Ruby. From 2.20.0 until 2.21.2, Ruby\u0027s JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partial_value reconstructs an incomplete object containing duplicate keys, the duplicate-key warning path calls cursor_position, which dereferences those stale pointers. This results in a heap-use-after-free and can terminate the Ruby process. An attacker who can supply JSON stream data to an application using JSON::ResumableParser may cause process termination when the application calls partial_value on incomplete attacker-controlled input containing duplicate object keys. This issue has been fixed in version 2.21.2.",
  "published": "2026-08-07T19:18:53Z",
  "severity": "",
  "epss": 0.00428,
  "epssPercentile": 0.37274,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "hawk2",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.7.2\u002Bgit.1788518533.7d4dadd6-160000.1.1",
      "fix": "OPENSUSE-SU-2026:22068-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22068-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
      "platform": "linux",
      "product": "hawk2",
      "release": "sles 16.0",
      "fixedVersion": "2.7.2\u002Bgit.1788518533.7d4dadd6-160000.1.1",
      "fix": "SUSE-SU-2026:24195-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24195-1",
      "released": "2026-11-07T00:45:20Z"
    },
    {
      "platform": "linux",
      "product": "ruby-json",
      "release": "Debian 14",
      "fixedVersion": "2.21.2\u002Bdfsg-1",
      "fix": "DEBIAN-CVE-2026-71847",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-71847",
      "released": "2026-08-13T22:19:30Z"
    }
  ],
  "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"
  }
}