Security advisory

{
  "id": "42383d2b7d56f9a989d511be59d006cb632867aa0bd7ea5910e2ccb5e910c36d",
  "url": "https://osv.dev/vulnerability/CVE-2019-16366",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-16366",
    "summary": "In XS 9.0.0 in Moddable SDK OS180329, there is a heap-based buffer overflow in fxBeginHost in xsAPI.c when called from fxRunDefine in xsRun.c, as demonstrated by crafted JavaScript code to xst.",
    "evidence": "osv:CVE-2019-16366",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2019-16366",
      "aliases": [
        "CVE-2019-16366"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/moddable-opensource/moddable",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c87b3326497f4bbdab7c3e3d8a2c9fd8d1fc0805"
                },
                {
                  "last_affected": "b1f42a2e148f0fc2cd91d7ed1cee56bd361656b2"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:moddable:moddable:os180329:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "os180329"
                      },
                      {
                        "last_affected": "os180329"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:moddable:xs:9.0.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "9.0.0"
                      },
                      {
                        "last_affected": "9.0.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "9.0.0",
            "os180329"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-16366.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/moddable-opensource/moddable-xst",
              "type": "GIT",
              "events": [
                {
                  "introduced": "7d5aa5fa89e5b7f9f57acba929a392e135c2ac74"
                },
                {
                  "last_affected": "7d5aa5fa89e5b7f9f57acba929a392e135c2ac74"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:moddable:xs:9.0.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "9.0.0"
                      },
                      {
                        "last_affected": "9.0.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "9.0.0",
            "v9.0.3",
            "v9.0.2",
            "v9.0.1",
            "v9.0.0",
            "v8.8.0",
            "v8.7.0",
            "v8.6.2",
            "v8.6.1",
            "v8.6.0",
            "v8.4.1",
            "v8.4.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-16366.json"
          }
        }
      ],
      "modified": "2026-10-24T10:50:05.777663695Z",
      "provider": "osv",
      "references": [
        "https://github.com/Moddable-OpenSource/moddable/issues/235"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-16366",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 441952,
  "published_at": "2019-09-16T17:15:14.293+00:00"
}