Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, the Handlebars CLI precompiler (`bin/handlebars` / `lib/precompiler.js`) concatenates user-controlled strings — template file names and several CLI options — directly into the JavaScript it emits, without any escaping or sanitization. An attacker who can influence template filenames or CLI arguments can inject arbitrary JavaScript that executes when the generated bundle is loaded in Node.js or a browser. Version 4.7.9 fixes the issue. Some workarounds are available. First, validate all CLI inputs before invoking the precompiler. Reject filenames and option values that contain characters with JavaScript string-escaping significance (`"`, `'`, `;`, etc.). Second, use a fixed, trusted namespace string passed via a configuration file rather than command-line arguments in automated pipelines. Third, run the precompiler in a sandboxed environment (container with no write access to sensitive paths) to limit the impact of successful exploitation. Fourth, audit template filenames in any repository or package that is consumed by an automated build pipeline.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-6599e30e04 advisory.

    33.0.3 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-cb5661d883 advisory.

    33.0.3 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 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-2fed8dd674 advisory.

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

  - Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through     4.7.8, the Handlebars CLI precompiler (`bin/handlebars` / `lib/precompiler.js`) concatenates user-     controlled strings  template file names and several CLI options  directly into the JavaScript it emits,     without any escaping or sanitization. An attacker who can influence template filenames or CLI arguments     can inject arbitrary JavaScript that executes when the generated bundle is loaded in Node.js or a browser.
    Version 4.7.9 fixes the issue. Some workarounds are available. First, validate all CLI inputs before     invoking the precompiler. Reject filenames and option values that contain characters with JavaScript     string-escaping significance (``, `'`, `;`, etc.). Second, use a fixed, trusted namespace string passed     via a configuration file rather than command-line arguments in automated pipelines. Third, run the     precompiler in a sandboxed environment (container with no write access to sensitive paths) to limit the     impact of successful exploitation. Fourth, audit template filenames in any repository or package that is     consumed by an automated build pipeline. (CVE-2026-33941)

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

ID	Name	Product	Family	Severity
313733	Fedora 43 : nextcloud (2026-6599e30e04)	Nessus	Fedora Local Security Checks	medium
313662	Fedora 44 : nextcloud (2026-cb5661d883)	Nessus	Fedora Local Security Checks	medium
313661	Fedora 42 : nextcloud (2026-2fed8dd674)	Nessus	Fedora Local Security Checks	medium
304160	Linux Distros Unpatched Vulnerability : CVE-2026-33941	Nessus	Misc.	high

Detections

Analytics

CVE-2026-33941

high

Tenable Plugins

medium

medium

medium

high