Wazuh: merged-file header path traversal in cluster sync allows arbitrary file write under WAZUH_PATH in Wazuh manager

{
  "id": "4e0a2a552886ddaaf38e5070232d4b7032e7c7e255e43e9b6a2842a7cc06614d",
  "url": "https://osv.dev/vulnerability/CVE-2026-48024",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Wazuh: merged-file header path traversal in cluster sync allows arbitrary file write under WAZUH_PATH in Wazuh manager",
    "summary": "Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.0.0 until 4.14.6 and 5.0.0-beta3, cluster.unmerge_info() in framework/wazuh/core/cluster/cluster.py constructs paths from peer-controlled merge_type and name values in a merged synchronization archive. process_files_from_worker() in framework/wazuh/core/cluster/master.py does not adequately confine the resulting path to the declared cluster item directory. A cluster peer holding the shared Fernet key can use traversal in files_metadata.json or a merged-file header to write files such as /var/ossec/etc/ossec.conf. Replacing ossec.conf can configure root-executed commands and lead to code execution when Wazuh services reload. This issue is fixed in versions 4.14.6 and 5.0.0-beta3.",
    "evidence": "osv:CVE-2026-48024",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-48024",
      "aliases": [
        "CVE-2026-48024",
        "GHSA-gh4h-fx78-q8xc"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wazuh/wazuh",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8c2c62a6e9dcbcf2c792f7924e8cfdb26842820b"
                },
                {
                  "fixed": "44c2925b46bd058d2426bd44ed1b3e5d7b7b03b4"
                },
                {
                  "introduced": "cddd833300cb5af494ba7dab31192bae649eb184"
                },
                {
                  "fixed": "88fc89fdfb1bf37b9d826e9c281a3d22655733de"
                },
                {
                  "fixed": "da844a6fdafd7388d11114841482596d1efdf5b3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0"
                      },
                      {
                        "fixed": "4.14.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:wazuh:wazuh:5.0.0:beta1:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.0.0-beta1"
                      },
                      {
                        "last_affected": "5.0.0-beta1"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:wazuh:wazuh:5.0.0:beta2:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.0.0-beta2"
                      },
                      {
                        "last_affected": "5.0.0-beta2"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "88fc89fdfb1bf37b9d826e9c281a3d22655733de"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "44c2925b46bd058d2426bd44ed1b3e5d7b7b03b4"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v4.14.6"
                  },
                  {
                    "range": [
                      {
                        "fixed": "da844a6fdafd7388d11114841482596d1efdf5b3"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v5.0.0-beta3"
                  }
                ]
              }
            }
          ],
          "versions": [
            "5.0.0-beta1",
            "5.0.0-beta2",
            "v5.0.0-beta2",
            "v5.0.0-beta1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48024.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.995595371Z",
      "provider": "osv",
      "references": [
        "https://github.com/wazuh/wazuh/releases/tag/v4.14.6",
        "https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48024.json",
        "https://github.com/wazuh/wazuh/security/advisories/GHSA-gh4h-fx78-q8xc",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-48024",
        "https://github.com/wazuh/wazuh/commit/88fc89fdfb1bf37b9d826e9c281a3d22655733de",
        "https://github.com/wazuh/wazuh/pull/36204"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-22"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48024.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-48024",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493229,
  "published_at": "2026-08-19T16:14:20.847+00:00"
}