markdown-it is a Markdown parser. Versions 14.1.1 and below contain a denial-of-service vulnerability when typographer: true is enabled, due to quadratic (O(n^2)) processing in the smartquotes rule. The issue stems from repeatedly modifying strings with replaceAt(), which performs O(n) slicing and concatenation per quote character. This can cause excessive CPU consumption when parsing quote-heavy, user-supplied markdown and may let attackers degrade or disrupt service availability. Although typographer is disabled by default, many production apps enable it for smart typography, making the issue relevant. This issue has been fixed in version 14.2.0.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - markdown-it is a Markdown parser. Versions 14.1.1 and below contain a denial-of-service vulnerability when
    typographer: true is enabled, due to quadratic (O(n^2)) processing in the smartquotes rule. The issue
    stems from repeatedly modifying strings with replaceAt(), which performs O(n) slicing and concatenation
    per quote character. This can cause excessive CPU consumption when parsing quote-heavy, user-supplied
    markdown and may let attackers degrade or disrupt service availability. Although typographer is disabled
    by default, many production apps enable it for smart typography, making the issue relevant. This issue has
    been fixed in version 14.2.0. (CVE-2026-48988)

The remote Fedora 45 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-5c1bbb46c3 advisory.

    34.0.4 Release

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

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

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-362f1943c8 advisory.

    34.0.4 Release

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

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

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-c495e95154 advisory.

    34.0.4 Release

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

Note that Nessus has not tested for these issues 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.

  - markdown-it is a Markdown parser. Versions 14.1.1 and below contain a denial-of-service vulnerability when     typographer: true is enabled, due to quadratic (O(n^2)) processing in the smartquotes rule. The issue     stems from repeatedly modifying strings with replaceAt(), which performs O(n) slicing and concatenation     per quote character. This can cause excessive CPU consumption when parsing quote-heavy, user-supplied     markdown and may let attackers degrade or disrupt service availability. Although typographer is disabled     by default, many production apps enable it for smart typography, making the issue relevant. This issue has     been fixed in version 14.2.0. (CVE-2026-48988)

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

ID	Name	Product	Family	Type	Severity
458934	Echo: markdown-it: security update to 14.2.0	Tenable Cloud Security	Echo Local Security Checks	Local	medium
458934	Echo: markdown-it: security update to 14.2.0	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	medium
350860	Fedora 45 : nextcloud (2026-5c1bbb46c3)	Nessus	Fedora Local Security Checks	Local	medium
350859	Fedora 44 : nextcloud (2026-362f1943c8)	Nessus	Fedora Local Security Checks	Local	medium
350858	Fedora 43 : nextcloud (2026-c495e95154)	Nessus	Fedora Local Security Checks	Local	medium
321702	Linux Distros Unpatched Vulnerability : CVE-2026-48988	Nessus	Misc.	Local	medium
443233	SCA: security update for markdown-it (GHSA-6v5v-wf23-fmfq)	Tenable Cloud Security	SCA Checks	Local	medium
443233	SCA: security update for markdown-it (GHSA-6v5v-wf23-fmfq)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium

Detections

Analytics

CVE-2026-48988

medium

Tenable Plugins

medium

medium

medium

medium

medium

medium

medium

medium