{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "5.0.0-beta3"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "da844a6fdafd7388d11114841482596d1efdf5b3"
            }
          ],
          "repo": "https://github.com/wazuh/wazuh",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-6hxp-c9x3-qc7p"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56401.json"
  },
  "details": "Wazuh wazuh-modulesd before 5.0.0-beta3 contains a null pointer dereference vulnerability in inventory_sync FlatBuffer DataValue handling. An enrolled agent can send a verifier-valid DataValue message omitting the optional id field, causing wazuh-modulesd to crash when dereferencing data-\u003eid()-\u003estring_view() without null validation, resulting in denial of service.",
  "id": "CVE-2026-56401",
  "modified": "2026-07-17T03:42:00.032403377Z",
  "published": "2026-07-08T13:49:05.553Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56401.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-6hxp-c9x3-qc7p"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56401"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/wazuh-null-pointer-dereference-in-inventory-sync-datavalue-flatbuffer-handling"
    },
    {
      "type": "FIX",
      "url": "https://github.com/wazuh/wazuh/commit/3adf4f87942705aa0ceeba1e145c259cc9dcd242"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Wazuh - NULL Pointer Dereference in inventory_sync DataValue FlatBuffer Handling"
}