{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "de30a79397f8db1c22bce2fd5a792d84fd065762"
            }
          ],
          "repo": "https://github.com/lexbor/lexbor",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-mrpr-v36q-2vp8"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-843"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29079.json"
  },
  "details": "Lexbor is a web browser engine library. Prior to 2.7.0, a type‑confusion vulnerability exists in Lexbor’s HTML fragment parser. When ns = UNDEF, a comment is created using the “unknown element” constructor. The comment’s data are written into the element’s fields via an unsafe cast, corrupting the qualified_name field. That corrupted value is later used as a pointer and dereferenced near the zero page. This vulnerability is fixed in 2.7.0.",
  "id": "CVE-2026-29079",
  "modified": "2026-04-01T23:09:44.727255709Z",
  "published": "2026-03-13T17:19:46.025Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29079.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/lexbor/lexbor/security/advisories/GHSA-mrpr-v36q-2vp8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-29079"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Type Confusion in Lexbor Fragment Parser"
}