deepHas vulnerable to Prototype Pollution via constructor.prototype

{
  "id": "e91c30d57920f3e7da07033a6fde3ec3c3c9ed3e7859e7a9c8ebc9791d47c0f5",
  "url": "https://osv.dev/vulnerability/CVE-2026-25047",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "deepHas vulnerable to Prototype Pollution via constructor.prototype",
    "summary": "deepHas provides a test for the existence of a nested object key and optionally returns that key. A prototype pollution vulnerability exists in version 1.0.7 of the deephas npm package that allows an attacker to modify global object behavior. This issue was fixed in version 1.0.8.",
    "evidence": "osv:CVE-2026-25047",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-25047",
      "aliases": [
        "CVE-2026-25047",
        "GHSA-2733-6c58-pf27"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/sharpred/deephas",
              "type": "GIT",
              "events": [
                {
                  "introduced": "54685e712c6ab54fcd79a339743da2c297141000"
                },
                {
                  "fixed": "8097fafd3776c613d8066546653e0d2c7b5fc465"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:sharpred:deephas:1.0.7:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "1.0.7"
                      },
                      {
                        "last_affected": "1.0.7"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "8097fafd3776c613d8066546653e0d2c7b5fc465"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.0.7"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-25047.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.250938741Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25047.json",
        "https://github.com/sharpred/deepHas/security/advisories/GHSA-2733-6c58-pf27",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-25047",
        "https://github.com/sharpred/deepHas/commit/8097fafd3776c613d8066546653e0d2c7b5fc465"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-1321"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25047.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-25047",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 488569,
  "published_at": "2026-01-29T21:39:48.498+00:00"
}