{
  "cveId": "CVE-2026-110684",
  "url": "https://patchblox.com/security/cve/CVE-2026-110684",
  "summary": "CVE-2026-110684 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2026-110684, released October 24, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "libcpanel-json-xs-perl: Cpanel::JSON::XS versions from 3.0202 before 4.80 for Perl leak memory and retain overloaded objects when encoding va...",
  "description": "Cpanel::JSON::XS versions from 3.0202 before 4.80 for Perl leak memory and retain overloaded objects when encoding values as strings in encode_stringify.  encode_stringify writes a value in its string form under allow_stringify, under convert_blessed for objects without TO_JSON, and under allow_bignum. For an array or hash object with a \u0022\u0022 overload, and from 4.20 a scalar object, it takes an extra reference that is never released, so the object and everything it references are never freed. From 4.10 it also never frees its copy of the string.  Repeatedly encoding data that contains such values grows process memory without bound.",
  "published": "2026-10-15T14:14:56Z",
  "severity": "high",
  "cvss": 8.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.00454,
  "epssPercentile": 0.39604,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libcpanel-json-xs-perl",
      "release": "Debian 14",
      "fixedVersion": "4.80-1",
      "fix": "DEBIAN-CVE-2026-110684",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-110684",
      "released": "2026-10-24T13:25:57Z"
    },
    {
      "platform": "linux",
      "product": "perl-Cpanel-JSON-XS",
      "release": "Fedora 43",
      "fixedVersion": "4.80-1.fc43",
      "fix": "FEDORA-2026-4447E52D23",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4447e52d23",
      "released": "2026-11-07T01:05:44Z"
    },
    {
      "platform": "linux",
      "product": "perl-Cpanel-JSON-XS",
      "release": "amzn 2023",
      "fixedVersion": "4.25-2.amzn2023.0.10",
      "fix": "ALAS2023-2026-3352",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3352",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "perl-Cpanel-JSON-XS",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "4.800.0-bp160.1.1",
      "fix": "OPENSUSE-SU-2026:22187-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22187-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
      "platform": "linux",
      "product": "perl-Cpanel-JSON-XS",
      "release": "sles 15.7",
      "fixedVersion": "4.800.0-150700.3.9.1",
      "fix": "SUSE-SU-2026:4926-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4926-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "perl-Cpanel-JSON-XS-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "4.80-1.fc43",
      "fix": "FEDORA-2026-4447E52D23",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4447e52d23",
      "released": "2026-11-07T01:05:44Z"
    },
    {
      "platform": "linux",
      "product": "perl-Cpanel-JSON-XS-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "4.25-2.amzn2023.0.10",
      "fix": "ALAS2023-2026-3352",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3352",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "perl-Cpanel-JSON-XS-debugsource",
      "release": "Fedora 43",
      "fixedVersion": "4.80-1.fc43",
      "fix": "FEDORA-2026-4447E52D23",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4447e52d23",
      "released": "2026-11-07T01:05:44Z"
    },
    {
      "platform": "linux",
      "product": "perl-Cpanel-JSON-XS-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "4.25-2.amzn2023.0.10",
      "fix": "ALAS2023-2026-3352",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3352",
      "released": "2026-11-07T01:06:07Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}