Markdown-it 14.1.0 - Cross-site scripting (XSS)

{
  "id": "6a21e559352c1ac69e396f586d99872bcb10decdfb8bd6b5b1e401417faade95",
  "url": "https://osv.dev/vulnerability/CVE-2025-7969",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Markdown-it 14.1.0 - Cross-site scripting (XSS)",
    "summary": "Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in markdown-it allows Cross-Site Scripting (XSS). This vulnerability is associated with program files lib/renderer.mjs. This issue affects markdown-it: 14.1.0. NOTE: the Supplier does not consider this issue to be a vulnerability.",
    "evidence": "osv:CVE-2025-7969",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-7969",
      "aliases": [
        "CVE-2025-7969"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/markdown-it/markdown-it",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0fe7ccb4b7f30236fb05f623be6924961d296d3d"
                },
                {
                  "last_affected": "0fe7ccb4b7f30236fb05f623be6924961d296d3d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "14.1.0"
                      },
                      {
                        "last_affected": "14.1.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "cpe": "cpe:2.3:a:markdown-it_project:markdown-it:14.1.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "14.1.0"
                      },
                      {
                        "last_affected": "14.1.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "14.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-7969.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:39.399416771Z",
      "provider": "osv",
      "references": [
        "https://registry.npmjs.org",
        "https://fluidattacks.com/advisories/fito",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/7xxx/CVE-2025-7969.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-7969",
        "https://github.com/markdown-it/markdown-it/issues/1122",
        "https://github.com/markdown-it/markdown-it"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "isDisputed": true,
        "cna_assigner": "Fluid Attacks",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/7xxx/CVE-2025-7969.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-7969",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 506623,
  "published_at": "2025-08-21T16:40:05.915+00:00"
}