CVE-2023-22483

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    CVE-2023-22483

    Published: 23 Jan 2023Last Modified: 28 Oct 2026

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

    Details: cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. Versions prior to 0.29.0.gfm.7 are subject to several polynomial time complexity issues in cmark-gfm that may lead to unbounded resource exhaustion and subsequent denial of service. Various commands, when piped to cmark-gfm with large values, cause the running time to increase quadratically. These vulnerabilities have been patched in version 0.29.0.gfm.7.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/22xxx/CVE-2023-22483.json, https://github.com/github/cmark-gfm/security/advisories/GHSA-29g3-96g3-jg6c, https://nvd.nist.gov/vuln/detail/CVE-2023-22483

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -57d5e093ef801f54bf4174c900f7a863599bb47d

    Affected versions

    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-2023-22483 | CVE-DB