KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. From 0.11.0 until 0.18.2, KaTeX uses ordinary JavaScript property access for the renderer options object, the trust setting, default and processor setting metadata, and namespace lookup and group restoration, allowing inherited properties to be treated as explicitly supplied values. When Object.prototype is already polluted or an attacker controls the options object's prototype, attacker-controlled mathematical expressions can use an inherited trust value to enable trusted rendering and produce links capable of user-interaction cross-site scripting or loading attacker-selected external resources in a consuming application that inserts unsanitized KaTeX output into a page. KaTeX does not itself create the prototype pollution, and rendering an expression alone does not execute script. This issue is fixed in version 0.18.2.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-1ffca57dbf advisory.

    35.0.2 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-b6b68838b0 advisory.

    35.0.2 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 45 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-72dc7f85d2 advisory.

    35.0.2 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:

  - KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. From 0.11.0 until
    0.18.2, KaTeX uses ordinary JavaScript property access for the renderer options object, the trust setting,
    default and processor setting metadata, and namespace lookup and group restoration, allowing inherited
    properties to be treated as explicitly supplied values. When Object.prototype is already polluted or an
    attacker controls the options object's prototype, attacker-controlled mathematical expressions can use an
    inherited trust value to enable trusted rendering and produce links capable of user-interaction cross-site
    scripting or loading attacker-selected external resources in a consuming application that inserts
    unsanitized KaTeX output into a page. KaTeX does not itself create the prototype pollution, and rendering
    an expression alone does not execute script. This issue is fixed in version 0.18.2. (CVE-2026-103923)

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

  - KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. From 0.11.0 until     0.18.2, KaTeX uses ordinary JavaScript property access for the renderer options object, the trust setting,     default and processor setting metadata, and namespace lookup and group restoration, allowing inherited     properties to be treated as explicitly supplied values. When Object.prototype is already polluted or an     attacker controls the options object's prototype, attacker-controlled mathematical expressions can use an     inherited trust value to enable trusted rendering and produce links capable of user-interaction cross-site     scripting or loading attacker-selected external resources in a consuming application that inserts     unsanitized KaTeX output into a page. KaTeX does not itself create the prototype pollution, and rendering     an expression alone does not execute script. This issue is fixed in version 0.18.2. (CVE-2026-103923)

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

ID	Name	Product	Family	Type	Severity
378698	Fedora 44 : nextcloud (2026-1ffca57dbf)	Nessus	Fedora Local Security Checks	Local	low
378688	Fedora 43 : nextcloud (2026-b6b68838b0)	Nessus	Fedora Local Security Checks	Local	low
378670	Fedora 45 : nextcloud (2026-72dc7f85d2)	Nessus	Fedora Local Security Checks	Local	low
473518	Chainguard: tensorflow-gpu-jupyter: security update to 2.21.0-r12	Tenable Cloud Security	Chainguard Local Security Checks	Local	low
473518	Chainguard: tensorflow-gpu-jupyter: security update to 2.21.0-r12	Tenable Self-Hosted Container Security	Chainguard Local Security Checks	Local	low
472983	SCA: security update for katex (GHSA-238p-pmpm-9mq7)	Tenable Cloud Security	SCA Checks	Local	low
472983	SCA: security update for katex (GHSA-238p-pmpm-9mq7)	Tenable Self-Hosted Container Security	SCA Checks	Local	low
362514	Linux Distros Unpatched Vulnerability : CVE-2026-103923	Nessus	Misc.	Local	low

Detections

Analytics

CVE-2026-103923

low

Tenable Plugins

low

low

low

low

low

low

low

low