Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior to 10.9.8 and 11.16.1, Mermaid's configuration setters (mermaid.initialize, mermaidAPI.setConfig, and mermaidAPI.updateSiteConfig) merge caller-supplied configuration into Mermaid's internal config using the assignWithDepth deep-merge helper, which is vulnerable to prototype pollution. This is only exploitable if an application forwards untrusted data directly into one of these configuration entry points, which is outside their documented usage; diagram-supplied configuration (e.g. %%{init: {}}%% or YAML frontmatter) is not affected. This issue is fixed in versions 10.9.8 and 11.16.1.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-625cbe86c8 advisory.

    34.0.3 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-a1368a72b4 advisory.

    34.0.3 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.

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

  - Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts.
    Prior to 10.9.8 and 11.16.1, Mermaid's configuration setters (mermaid.initialize, mermaidAPI.setConfig,
    and mermaidAPI.updateSiteConfig) merge caller-supplied configuration into Mermaid's internal config using
    the assignWithDepth deep-merge helper, which is vulnerable to prototype pollution. This is only
    exploitable if an application forwards untrusted data directly into one of these configuration entry
    points, which is outside their documented usage; diagram-supplied configuration (e.g. %%{init: {}}%% or
    YAML frontmatter) is not affected. This issue is fixed in versions 10.9.8 and 11.16.1. (CVE-2026-71438)

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

  - Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts.
    Prior to 10.9.8 and 11.16.1, Mermaid's configuration setters (mermaid.initialize, mermaidAPI.setConfig,     and mermaidAPI.updateSiteConfig) merge caller-supplied configuration into Mermaid's internal config using     the assignWithDepth deep-merge helper, which is vulnerable to prototype pollution. This is only     exploitable if an application forwards untrusted data directly into one of these configuration entry     points, which is outside their documented usage; diagram-supplied configuration (e.g. %%{init: {}}%% or     YAML frontmatter) is not affected. This issue is fixed in versions 10.9.8 and 11.16.1. (CVE-2026-71438)

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

ID	Name	Product	Family	Type	Severity
339195	Fedora 43 : nextcloud (2026-625cbe86c8)	Nessus	Fedora Local Security Checks	Local	medium
339193	Fedora 44 : nextcloud (2026-a1368a72b4)	Nessus	Fedora Local Security Checks	Local	medium
445782	SCA: security update for mermaid (GHSA-c4c3-pg64-4m4v)	Tenable Cloud Security	SCA Checks	Local	low
445782	SCA: security update for mermaid (GHSA-c4c3-pg64-4m4v)	Tenable Self-Hosted Container Security	SCA Checks	Local	low
333315	Linux Distros Unpatched Vulnerability : CVE-2026-71438	Nessus	Misc.	Local	low

Detections

Analytics

CVE-2026-71438

low

Tenable Plugins

medium

medium

low

low

low