CVE-2026-2327 (GCVE-0-2026-2327)
Vulnerability from cvelistv5
Published
2026-02-12 05:00
Modified
2026-02-12 14:41
Severity ?
5.5 (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/E:P
CWE
  • CWE-1333 - Regular Expression Denial of Service (ReDoS)
Summary
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.
References
Impacted products
Vendor Product Version
n/a markdown-it Version: 13.0.0   ≤
Show details on NVD website

To clipboard 

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                "id": "CVE-2026-2327",
                "options": [
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                  },
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                  },
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                    "Technical Impact": "partial"
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-12T14:41:31.205349Z",
                "version": "2.0.3"
              },
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            "url": "https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917"
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        "title": "CISA ADP Vulnrichment"
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    "cna": {
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          "vendor": "n/a",
          "versions": [
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          "value": "Duc Le Trung"
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          "value": "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."
        }
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      "metrics": [
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P",
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            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "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/E:P",
            "version": "4.0",
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      "problemTypes": [
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        },
        {
          "url": "https://github.com/markdown-it/markdown-it/blob/14.1.0/lib/rules_inline/linkify.mjs%23L33"
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        {
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    "dateReserved": "2026-02-11T07:02:27.771Z",
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    "state": "PUBLISHED"
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  "dataVersion": "5.2"
}


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