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Vulnerability Database · npm · handlebars · Version

handlebars 4.0.11

4.0.11 is affected by 17 vulnerabilities.

The vulnerabilities that cover this exact version are listed below with the fixed version to move to. The upgrade Vulert recommends: 4.7.10.

Critical 7 High 5 Medium 4 Low 1 Unrated 0

All handlebars versions & vulnerabilities → Source repository Search the database for this package →
Released 17 Oct 2017 Licence MIT Also known from other sources 20 Newer releases 82 Database updated 23/Oct/2026

Release and licence data published by the npm registry. Licence information is not legal advice.

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01 Vulnerabilities affecting this version

handlebars 4.0.11 vulnerabilities

17 vulnerabilities cover handlebars 4.0.11. Scroll the table for all of them, or open the full list in the database.

Vulnerability Severity Fixed version Disclosed
CVE-2026-106446: Handlebars JavaScript Injection Vulnerability via AST Type Confusion 9.8 critical 4.7.10 08 Oct 2026
CVE-2026-33937: Handlebars.js JavaScript Injection via AST Type Confusion 9.8 critical 4.7.9 27 Mar 2026
CVE-2021-23383: Prototype Pollution in handlebars 9.8 critical 4.7.7 10 Feb 2022
Remote code execution in handlebars when compiling templates 9.8 critical 4.7.7 06 May 2021
CVE-2021-23369: Remote Code Execution in Handlebars 9.8 critical 4.7.7 06 May 2021
CVE-2019-19919: Prototype Pollution in handlebars 9.8 critical 4.3.0 26 Dec 2019
CVE-2026-106445: Handlebars JavaScript Injection Vulnerability Leading to Remote Code Execution 9.2 critical 4.7.10 08 Oct 2026
CVE-2026-33941: Handlebars.js JavaScript Injection Vulnerability in CLI Precompiler 8.2 high 4.7.9 27 Mar 2026
CVE-2026-33940: Handlebars.js JavaScript Injection via AST Type Confusion in Dynamic Partial Lookups 8.1 high 4.7.9 27 Mar 2026
CVE-2026-33938: Handlebars.js JavaScript Injection via AST Type Confusion in @partial-block 8.1 high 4.7.9 27 Mar 2026
CVE-2026-33939: Handlebars.js Denial of Service via Malformed Decorator Syntax 7.5 high 4.7.9 27 Mar 2026
CVE-2019-20922: Regular Expression Denial of Service in Handlebars 7.5 high 4.4.5 10 Feb 2022
CVE-2026-106444: Handlebars JavaScript Injection via Unsafe Inline Embedding of Precompiled Templates 4.7 medium 4.7.10 08 Oct 2026
CVE-2026-33916: Handlebars.js Prototype Pollution Leading to XSS through Partial Template Injection 4.7 medium 4.7.9 26 Mar 2026
Property Access Validation Bypass in Handlebars.js 3.7 low 4.7.9 29 Mar 2026
Denial of Service in handlebars N/A medium 4.4.5 03 Sep 2020
Remote Code Execution in Handlebars.js N/A medium 4.1.0 15 Jul 2019

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Questions

About handlebars 4.0.11

Is handlebars 4.0.11 vulnerable?

Yes. 17 vulnerabilities in the Vulert database cover handlebars 4.0.11: 7 critical, 5 high, 4 medium and 1 low. The upgrade Vulert recommends is 4.7.10, and each entry above names the fixed version to move to.

Which version of handlebars should I use instead of 4.0.11?

4.7.10 is the version Vulert recommends for this release line. The version table on the package page lists every release with the vulnerabilities recorded against it.

Is 4.0.11 the latest release of handlebars?

No. 4.0.11 was published 17 Oct 2017, and newer releases exist. Newer is not automatically safer — the version table on the package page shows what each release carries.

How do I monitor handlebars for upcoming vulnerabilities?

Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the handlebars version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.