{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.43"
              },
              {
                "fixed": "4.80"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "9ca95d3a8edefe6354f17e93f564b4dce63d73df"
            },
            {
              "fixed": "5552a527abb648d9eb4134e91412800013ddecb9"
            }
          ],
          "repo": "https://github.com/rurban/cpanel-json-xs",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "CPANSec",
    "cwe_ids": [
      "CWE-176"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110687.json"
  },
  "details": "Cpanel::JSON::XS versions from 4.43 before 4.80 for Perl misorder byte-string keys during canonical encoding in utf16_cmp.\n\ncanonical sorts keys by UTF-16 code units. When any key in a hash is UTF-8 flagged, every key is decoded as UTF-8 for the comparison, including byte-string keys that the encoder writes out as Latin-1 characters. A byte-string key whose bytes are valid UTF-8 is sorted out of order, and two keys that encode differently can compare equal and are left in hash order.\n\nThe same data can encode to different canonical documents across processes.",
  "id": "CVE-2026-110687",
  "modified": "2026-10-20T02:30:47.260110748Z",
  "published": "2026-10-19T18:12:22.028Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cpan.org/modules"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110687.json"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rurban/Cpanel-JSON-XS"
    },
    {
      "type": "FIX",
      "url": "https://github.com/rurban/Cpanel-JSON-XS/commit/bb9da30b67f637f4d57922f0e043376363f28f0c.patch"
    },
    {
      "type": "ADVISORY",
      "url": "https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-110687"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "Cpanel::JSON::XS versions from 4.43 before 4.80 for Perl misorder byte-string keys during canonical encoding in utf16_cmp"
}