cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. A polynomial time complexity issue in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. This CVE covers quadratic complexity issues when parsing text which leads with either large numbers of `>` or `-` characters. This issue has been addressed in version 0.29.0.gfm.10. Users are advised to upgrade. Users unable to upgrade should validate that their input comes from trusted sources.

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2025:8427 advisory.

    * cmark-gfm: Quadratic complexity bugs may lead to a denial of service (CVE-2023-24824)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2025:8427 advisory.

    * cmark-gfm: Quadratic complexity bugs may lead to a denial of service (CVE-2023-24824)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:8427 advisory.

    Pandoc is a Haskell library for converting from one markup format to another, and a command-line tool that     uses this library. It can read several dialects of Markdown and (subsets of) HTML, reStructuredText,     LaTeX, DocBook, JATS, MediaWiki markup, TWiki markup, TikiWiki markup, Creole 1.0, Haddock markup, OPML,     Emacs Org-Mode, Emacs Muse, txt2tags, Vimwiki, Word Docx, ODT, and Textile, and it can write Markdown,     reStructuredText, XHTML, HTML 5, LaTeX, ConTeXt, DocBook, JATS, OPML, TEI, OpenDocument, ODT, Word docx,     RTF, MediaWiki, DokuWiki, ZimWiki, Textile, groff man, groff ms, plain text, Emacs Org-Mode, AsciiDoc,     Haddock markup, EPUB (v2 and v3), FictionBook2, InDesign ICML, Muse, LaTeX beamer slides, PowerPoint, and     several kinds of HTML/JavaScript slide shows (S5, Slidy, Slideous, DZSlides, reveal.js).  In contrast to     most existing tools for converting Markdown to HTML, pandoc has a modular design: it consists of a set of     readers, which parse text in a given format and produce a native representation of the document, and a set     of writers, which convert this native representation into a target format. Thus, adding an input or output     format requires only adding a reader or writer.  For pdf output please also install pandoc-pdf.

    Security Fix(es):

    * cmark-gfm: Quadratic complexity bugs may lead to a denial of service (CVE-2023-24824)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. A     polynomial time complexity issue in cmark-gfm may lead to unbounded resource exhaustion and subsequent     denial of service. This CVE covers quadratic complexity issues when parsing text which leads with either     large numbers of `>` or `-` characters. This issue has been addressed in version 0.29.0.gfm.10. Users are     advised to upgrade. Users unable to upgrade should validate that their input comes from trusted sources.
    (CVE-2023-24824)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
243095	RockyLinux 8 : pandoc (RLSA-2025:8427)	Nessus	Rocky Linux Local Security Checks	high
241319	AlmaLinux 8 : pandoc (ALSA-2025:8427)	Nessus	Alma Linux Local Security Checks	high
237691	RHEL 8 : pandoc (RHSA-2025:8427)	Nessus	Red Hat Local Security Checks	high
227292	Linux Distros Unpatched Vulnerability : CVE-2023-24824	Nessus	Misc.	high

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CVE-2023-24824

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Tenable Plugins

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