Pivotick - Stack Exhaustion Denial of Service via Deep or Cyclic Graph Data

{
  "id": "5a459bcf101feb48ddfa5cd19d26ca6e819eaed9772d7aafe5df247fc1f42ea1",
  "url": "https://osv.dev/vulnerability/CVE-2026-66920",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Pivotick - Stack Exhaustion Denial of Service via Deep or Cyclic Graph Data",
    "summary": "Pivotick contains an uncontrolled-recursion vulnerability when processing caller-supplied graph and node data. The affected graph algorithms recursively traversed graph edges, while the JSON viewer recursively processed each level of a node’s data structure. A specially crafted graph containing an excessively long path, deeply nested properties, or circular object references could therefore exhaust the JavaScript call stack when Pivotick calculates a layout or displays a node in the inspection modal. Successful exploitation may cause an uncaught exception, freeze the affected page, or crash the browser tab, resulting in a client-side denial of service. No confidentiality or integrity impact has been identified. The patch replaces the recursive graph traversals with iterative stack-based implementations and limits the reachability calculation to 1,000,000 edge traversals. It also limits JSON rendering to 64 levels and detects circular references before descending further into an object.",
    "evidence": "osv:CVE-2026-66920",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-66920",
      "aliases": [
        "CVE-2026-66920"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/pivotick/pivotick",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "66373141eb7892fc29a3b42cfb2c160af16765fe"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.4.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "66373141eb7892fc29a3b42cfb2c160af16765fe"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.4.0",
            "v1.2.0",
            "v1.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-66920.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:42.375353889Z",
      "provider": "osv",
      "references": [
        "https://github.com/Pivotick/Pivotick/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66920.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-66920",
        "https://github.com/Pivotick/Pivotick/commit/66373141eb7892fc29a3b42cfb2c160af16765fe"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-400",
          "CWE-674"
        ],
        "cna_assigner": "CIRCL",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66920.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-66920",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 510160,
  "published_at": "2026-07-28T12:57:21.098+00:00"
}