Remote code execution in handlebars when compiling templates
Summary
CVE-2021-23369: Remote code execution in handlebars when compiling templates. Affects handlebars versions < 4.7.7. Fixed in 4.7.7. How to fix ↓
Also tracked for
- node-handlebars · Debian:11
The same CVE-2021-23369 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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The package handlebars before 4.7.7 are vulnerable to Remote Code Execution (RCE) when selecting certain compiling options to compile templates coming from an untrusted source.
How To Fix
Latest published version: 4.7.10 as of 22 Oct 2026
npm install handlebars@4.7.10Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
4.7.7
This is the first release that contains the fix.
npm install handlebars@4.7.7Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
References
Related vulnerabilities
Recent vulnerabilities recorded for handlebars.
