axios 0.31.1 before 0.33.0 and 1.15.1 before 1.18.0 Denial of Service via maxDepth bypass

{
  "id": "a01271b87dc66bd0abc5cca98a78ecf36122a388a105da0a87542f697389cc9d",
  "url": "https://osv.dev/vulnerability/CVE-2026-67321",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "axios 0.31.1 before 0.33.0 and 1.15.1 before 1.18.0 Denial of Service via maxDepth bypass",
    "summary": "axios versions 0.31.1 before 0.33.0 and 1.15.1 before 1.18.0 contain an incomplete depth-limit bypass in toFormData.js when serializing objects with top-level keys ending in '{}'. Attackers who control object keys and nested values passed to axios form or parameter serialization can trigger a RangeError from JSON.stringify, causing denial of service in the affected request path.",
    "evidence": "osv:CVE-2026-67321",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-67321",
      "aliases": [
        "CVE-2026-67321",
        "GHSA-hcpx-6fm6-wx23"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/axios/axios",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a589dc525af12e0fabef7d6e5be028ad433eee31"
                },
                {
                  "fixed": "d998cc9a1aa5cc45fbdfbdded6e9ecf8beb61aed"
                },
                {
                  "introduced": "ac42446be51300fe214ba3c6e40cc95f34fd6871"
                },
                {
                  "fixed": "2d06f96e8602c2db13b65a26340ee4a1bbc0b61f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:axios:axios:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0.31.1"
                      },
                      {
                        "fixed": "0.33.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:axios:axios:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "1.15.1"
                      },
                      {
                        "fixed": "1.18.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.17.0",
            "v1.16.1",
            "v0.32.0",
            "v0.31.1",
            "v1.16.0",
            "v1.15.2",
            "v1.15.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67321.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.577615283Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67321.json",
        "https://github.com/axios/axios/security/advisories/GHSA-hcpx-6fm6-wx23",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-67321",
        "https://www.vulncheck.com/advisories/axios-before-denial-of-service-via-maxdepth-bypass"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-674"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67321.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-67321",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496113,
  "published_at": "2026-08-01T12:22:18.177+00:00"
}