Security advisory

{
  "id": "34a949619957a389134862c46251c3456f0110c1fe9beb4438af782b085ff334",
  "url": "https://osv.dev/vulnerability/CVE-2019-9844",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-9844",
    "summary": "simple-markdown.js in Khan Academy simple-markdown before 0.4.4 allows XSS via a data: or vbscript: URI.",
    "evidence": "osv:CVE-2019-9844",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2019-9844",
      "aliases": [
        "CVE-2019-9844",
        "GHSA-qj3f-9gmq-fwv5"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ariabuckles/simple-markdown",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "e8e40487ae9438075b5bb52176182c9bf69b7b34"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:khanacademy:simple-markdown:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.4.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.4.3",
            "0.4.2",
            "0.4.0",
            "0.3.3",
            "0.3.2",
            "0.3.1",
            "0.3.0",
            "0.2.2",
            "0.1.1",
            "0.1.0",
            "0.0.9"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-9844.json"
          }
        }
      ],
      "modified": "2026-10-20T10:51:43.976259428Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JFLP3KJVSV5VWMNEBRXLGRVYFXOV5KOG/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KZG2I7VH7WLSEUQ77KYP5CRAVFT2RK2U/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O5EFW655O3BXZYAPB65XEREXB2DSNSOT/",
        "https://github.com/Khan/simple-markdown/pull/63",
        "https://www.npmjs.com/package/simple-markdown/v/0.4.4"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "30"
                  },
                  {
                    "last_affected": "30"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2019-9844",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382836,
  "published_at": "2019-04-09T02:29:02.163+00:00"
}