Maker.js Vulnerable to Unsafe Property Copying in makerjs.extendObject

{
  "id": "4c479c52376ec7c712c5f069a4dacad7fb814c2fcb1e6161cc62e661ba92dbca",
  "url": "https://osv.dev/vulnerability/CVE-2026-24888",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Maker.js Vulnerable to Unsafe Property Copying in makerjs.extendObject",
    "summary": "Maker.js is a 2D vector line drawing and shape modeling for CNC and laser cutters. In versions up to and including 0.19.1, the `makerjs.extendObject` function copies properties from source objects without proper validation, potentially exposing applications to security risks. The function lacks `hasOwnProperty()` checks and does not filter dangerous keys, allowing inherited properties and potentially malicious properties to be copied to target objects. A patch is available in commit 85e0f12bd868974b891601a141974f929dec36b8, which is expected to be part of version 0.19.2.",
    "evidence": "osv:CVE-2026-24888",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-24888",
      "aliases": [
        "CVE-2026-24888",
        "GHSA-2cp6-34r9-54xx"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/microsoft/maker.js",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "85e0f12bd868974b891601a141974f929dec36b8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "85e0f12bd868974b891601a141974f929dec36b8"
                      }
                    ],
                    "source": "DESCRIPTION"
                  },
                  {
                    "range": [
                      {
                        "fixed": "85e0f12bd868974b891601a141974f929dec36b8"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.9.17",
            "0.9.10",
            "0.7.1",
            "0.7.0",
            "0.6.11",
            "0.6",
            "0.5.3",
            "0.2.1",
            "0.1.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-24888.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.974874963Z",
      "provider": "osv",
      "references": [
        "https://github.com/microsoft/maker.js/blob/98cffa82a372ff942194c925a12a311253587167/packages/maker.js/src/core/maker.ts#L232-L241",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24888.json",
        "https://github.com/microsoft/maker.js/security/advisories/GHSA-2cp6-34r9-54xx",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-24888",
        "https://github.com/microsoft/maker.js/commit/85e0f12bd868974b891601a141974f929dec36b8"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-1321"
        ],
        "cna_assigner": "GitHub_M",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "last_affected": "0.19.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              }
            ]
          },
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "last_affected": "0.19.1"
                  }
                ],
                "source": "DESCRIPTION"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24888.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-24888",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491468,
  "published_at": "2026-01-28T21:35:44.03+00:00"
}