{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:free5gc:udm:*:*:*:*:*:go:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.4.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "65d7070f4bfd016864cbbaefbd506bbc85d2fa92"
            }
          ],
          "repo": "https://github.com/free5gc/udm",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-7g27-v5wj-jr75"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-478"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33064.json"
  },
  "details": "Free5GC is an open-source Linux Foundation project for 5th generation (5G) mobile core networks. Versions prior to 1.4.2 are vulnerable to procedure panic caused by Nil Pointer Dereference in the /sdm-subscriptions endpoint. A remote attacker can cause the UDM service to panic and crash by sending a crafted POST request to the /sdm-subscriptions endpoint with a malformed URL path containing path traversal sequences (../) and a large JSON payload. The DataChangeNotificationProcedure function in notifier.go attempts to access a nil pointer without proper validation, causing a complete service crash with \"runtime error: invalid memory address or nil pointer dereference\". Exploitation would result in UDM functionality disruption until recovery by restart. This issue has been fixed in version 1.4.2.",
  "id": "CVE-2026-33064",
  "modified": "2026-07-15T01:49:00.759221556Z",
  "published": "2026-03-20T08:00:31.755Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33064.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/free5gc/free5gc/security/advisories/GHSA-7g27-v5wj-jr75"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33064"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/free5gc/free5gc/issues/781"
    },
    {
      "type": "FIX",
      "url": "https://github.com/free5gc/udm/commit/65d7070f4bfd016864cbbaefbd506bbc85d2fa92"
    },
    {
      "type": "FIX",
      "url": "https://github.com/free5gc/udm/pull/78"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "free5GC UDM DataChangeNotification Procedure Panic Due to Nil Pointer Dereference"
}