{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "2.8.2"
              },
              {
                "fixed": "2.8.4"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE"
            ]
          },
          "events": [
            {
              "introduced": "c61098da494eea1cbd091118118dcee417faacea"
            },
            {
              "fixed": "12cf0b1f25f026a022fe728ad8f7e3d017285b80"
            }
          ],
          "repo": "https://github.com/libexpat/libexpat",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "mitre",
    "cwe_ids": [
      "CWE-394"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/76xxx/CVE-2026-76956.json"
  },
  "details": "In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content.",
  "id": "CVE-2026-76956",
  "modified": "2026-09-10T03:30:28.499602884Z",
  "published": "2026-08-20T04:22:51.381Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/76xxx/CVE-2026-76956.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76956"
    },
    {
      "type": "FIX",
      "url": "https://github.com/libexpat/libexpat/pull/1326"
    },
    {
      "type": "FIX",
      "url": "https://github.com/libexpat/libexpat/pull/1329"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}