{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2025-6493",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-6493",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-06-22T22:00:10.483Z",
    "updatedAt": "2025-09-29T13:48:37.784Z",
    "importedAt": "2026-10-24T01:57:44.935Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "CodeMirror Markdown Mode markdown.js redos",
      "summary": "A weakness has been identified in CodeMirror up to 5.65.20. Affected is an unknown function of the file mode/markdown/markdown.js of the component Markdown Mode. This manipulation causes inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be exploited. Upgrading to version 6.0 is able to address this issue. You should upgrade the affected component. Not all code samples mentioned in the GitHub issue can be found. The repository mentions, that \"CodeMirror 6 exists, and is [...] much more actively maintained.\"",
      "affected": [
        {
          "vendor": "n/a",
          "product": "CodeMirror",
          "versions": [
            {
              "version": "5.65.0",
              "status": "affected"
            },
            {
              "version": "5.65.1",
              "status": "affected"
            },
            {
              "version": "5.65.2",
              "status": "affected"
            },
            {
              "version": "5.65.3",
              "status": "affected"
            },
            {
              "version": "5.65.4",
              "status": "affected"
            },
            {
              "version": "5.65.5",
              "status": "affected"
            },
            {
              "version": "5.65.6",
              "status": "affected"
            },
            {
              "version": "5.65.7",
              "status": "affected"
            },
            {
              "version": "5.65.8",
              "status": "affected"
            },
            {
              "version": "5.65.9",
              "status": "affected"
            },
            {
              "version": "5.65.10",
              "status": "affected"
            },
            {
              "version": "5.65.11",
              "status": "affected"
            },
            {
              "version": "5.65.12",
              "status": "affected"
            },
            {
              "version": "5.65.13",
              "status": "affected"
            },
            {
              "version": "5.65.14",
              "status": "affected"
            },
            {
              "version": "5.65.15",
              "status": "affected"
            },
            {
              "version": "5.65.16",
              "status": "affected"
            },
            {
              "version": "5.65.17",
              "status": "affected"
            },
            {
              "version": "5.65.18",
              "status": "affected"
            },
            {
              "version": "5.65.19",
              "status": "affected"
            },
            {
              "version": "5.65.20",
              "status": "affected"
            },
            {
              "version": "6.0",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  }
}