ghsa-p9wx-2529-fp83
Vulnerability from github
Published
2025-05-23 15:31
Modified
2025-05-27 15:03
Severity ?
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Summary
Marked allows Regular Expression Denial of Service (ReDoS) attacks
Details

Marked prior to version 0.3.17 is vulnerable to a Regular Expression Denial of Service (ReDoS) attack due to catastrophic backtracking in several regular expressions used for parsing HTML tags and markdown links. An attacker can exploit this vulnerability by providing specially crafted markdown input, such as deeply nested or repetitively structured brackets or tag attributes, which cause the parser to hang and lead to a Denial of Service.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "marked"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.3.17"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-25110"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-05-27T15:03:47Z",
    "nvd_published_at": "2025-05-23T15:15:20Z",
    "severity": "MODERATE"
  },
  "details": "Marked prior to version 0.3.17 is vulnerable to a Regular Expression Denial of Service (ReDoS) attack due to catastrophic backtracking in several regular expressions used for parsing HTML tags and markdown links. An attacker can exploit this vulnerability by providing specially crafted markdown input, such as deeply nested or repetitively structured brackets or tag attributes, which cause the parser to hang and lead to a Denial of Service.",
  "id": "GHSA-p9wx-2529-fp83",
  "modified": "2025-05-27T15:03:47Z",
  "published": "2025-05-23T15:31:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-25110"
    },
    {
      "type": "WEB",
      "url": "https://github.com/markedjs/marked/issues/1070"
    },
    {
      "type": "WEB",
      "url": "https://github.com/markedjs/marked/pull/1083"
    },
    {
      "type": "WEB",
      "url": "https://github.com/markedjs/marked/commit/20bfc106013ed45713a21672ad4a34df94dcd485"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Checkmarx/Vulnerabilities-Proofs-of-Concept/tree/main/2018/CVE-2018-25110"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/markedjs/marked"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Marked allows Regular Expression Denial of Service (ReDoS) attacks"
}


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