CVE-2023-37463

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    CVE-2023-37463

    Published: 13 Jul 2023Last Modified: 12 Aug 2026

    Summary: Quadratic complexity bugs may lead to a denial of service

    Details: cmark-gfm is an extended version of the C reference implementation of CommonMark, a rationalized version of Markdown syntax with a spec. Three polynomial time complexity issues in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. These vulnerabilities have been patched in 0.29.0.gfm.12.

    References: https://github.com/github/cmark-gfm/releases/tag/0.29.0.gfm.12, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/37xxx/CVE-2023-37463.json, https://github.com/github/cmark-gfm/security/advisories/GHSA-w4qg-3vf7-m9x5, https://nvd.nist.gov/vuln/detail/CVE-2023-37463

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -f94b7ed311688b4e14ed10904af98d4536414267

    Affected versions

    0.29.0.gfm.11
    0.29.0.gfm.10
    0.29.0.gfm.9
    0.29.0.gfm.8
    0.29.0.gfm.7
    0.29.0.gfm.6
    0.29.0.gfm.5
    0.29.0.gfm.4
    0.29.0.gfm.3
    0.29.0.gfm.2
    0.29.0.gfm.1
    0.29.0.gfm.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2023-37463 | CVE-DB