{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "13.0.0"
              },
              {
                "fixed": "14.1.1"
              }
            ]
          },
          "events": [
            {
              "introduced": "6ec0b76ebe439f5858ae51d8e0cb45ee4a7ad46c"
            },
            {
              "fixed": "b4a9b659ef5734223731cfaa3ad5eacc6fc22918"
            },
            {
              "fixed": "4b4bbcae5e0990a5b172378e507b33a59012ed26"
            }
          ],
          "repo": "https://github.com/markdown-it/markdown-it",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "Versions of the package markdown-it from 13.0.0 and before 14.1.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of the regex /\\*+$/ in the linkify function. An attacker can supply a long sequence of * characters followed by a non-matching character, which triggers excessive backtracking and may lead to a denial-of-service condition.",
  "id": "CVE-2026-2327",
  "modified": "2026-03-14T13:49:25.628482350Z",
  "published": "2026-02-12T06:16:02.243Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/markdown-it/markdown-it/blob/14.1.0/lib/rules_inline/linkify.mjs%23L33"
    },
    {
      "type": "ADVISORY",
      "url": "https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917"
    },
    {
      "type": "ADVISORY",
      "url": "https://security.snyk.io/vuln/SNYK-JS-MARKDOWNIT-10666750"
    },
    {
      "type": "FIX",
      "url": "https://github.com/markdown-it/markdown-it/commit/4b4bbcae5e0990a5b172378e507b33a59012ed26"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}