GHSA-jr9p-r423-9m2r
Vulnerability from github
Published
2021-06-02 21:44
Modified
2024-09-30 20:15
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Summary
markdown2 Regular Expression Denial of Service
Details

markdown2 >=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "markdown2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.0.1.18"
            },
            {
              "fixed": "2.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-26813"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-12T21:02:47Z",
    "nvd_published_at": "2021-03-03T16:15:00Z",
    "severity": "HIGH"
  },
  "details": "markdown2 \u003e=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.",
  "id": "GHSA-jr9p-r423-9m2r",
  "modified": "2024-09-30T20:15:06Z",
  "published": "2021-06-02T21:44:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-26813"
    },
    {
      "type": "WEB",
      "url": "https://github.com/trentm/python-markdown2/pull/387"
    },
    {
      "type": "WEB",
      "url": "https://github.com/trentm/python-markdown2/commit/7b651260739647de5198323e0445b1618750c374"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-jr9p-r423-9m2r"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/markdown2/PYSEC-2021-20.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/trentm/python-markdown2"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BRP5RN35JZTSJ3JT4722F447ZDK7LZS5"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/J752422YELXLMLZJPVJVKD2KKHHQRVEH"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JTIX5UXRDJZJ57DO4V33ZNJTNKWGBQLY"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "markdown2 Regular Expression Denial of Service "
}


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