{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "libxml2"
              },
              {
                "fixed": "2.15.4"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "4b637079f26d8f5879ed45eb18cd249cad261951"
            },
            {
              "fixed": "96498992efa48d52b0e8b83058bd88dbdaf153c1"
            },
            {
              "fixed": "6b3a736c0edc74ceec3d82f5252499d7911b3a58"
            }
          ],
          "repo": "https://github.com/gnome/libxml2",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "mitre",
    "cwe_ids": [
      "CWE-122"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86142.json"
  },
  "details": "In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer length saturation.",
  "id": "CVE-2026-86142",
  "modified": "2026-09-08T03:30:21.290312007Z",
  "published": "2026-09-05T04:29:33.323Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1113"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86142.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86142"
    },
    {
      "type": "FIX",
      "url": "https://github.com/GNOME/libxml2/commit/6b3a736c0edc74ceec3d82f5252499d7911b3a58"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
      "type": "CVSS_V3"
    }
  ]
}