{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "2.7.2"
                  },
                  {
                    "last_affected": "2.9.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          },
          "events": [
            {
              "introduced": "7643f96bd5b9f5d3b26ea112519e05e17ef91cfb"
            },
            {
              "last_affected": "a76b1174c1ea52abb639a4c69d52b630a8a106a2"
            }
          ],
          "repo": "https://github.com/libexpat/libexpat",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-909"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113351.json"
  },
  "details": "libexpat 2.7.2 through 2.9.0 contains a denial of service vulnerability because XML_ParserReset zeroes the direct byte count but never offsets tracked heap allocations. Attackers can submit a large XML document so later documents on the same reset parser fail with XML_ERROR_NO_MEMORY until it is recreated.",
  "id": "CVE-2026-113351",
  "modified": "2026-10-21T02:30:50.149145683Z",
  "published": "2026-10-20T10:41:37.468Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113351.json"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/libexpat/libexpat"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/libexpat/libexpat/blob/a76b1174c1ea52abb639a4c69d52b630a8a106a2/expat/lib/xmlparse.c#L1560"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/libexpat/libexpat/blob/a76b1174c1ea52abb639a4c69d52b630a8a106a2/expat/lib/xmlparse.c#L860-L884"
    },
    {
      "type": "FIX",
      "url": "https://github.com/libexpat/libexpat/pull/1431"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113351"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/libexpat-2.7.2-through-2.9.0-denial-of-service-via-xml-parserreset"
    }
  ],
  "schema_version": "1.9.0",
  "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": "libexpat 2.7.2 through 2.9.0 Denial of Service via XML_ParserReset"
}