Vulnerability library
Security checkOctober 08, 2026

Handlebars: JavaScript Injection via Unsafe Inline Embedding of Precompiled Templates

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Medium severitynpmhandlebars

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Description

Handlebars.precompile() generates JavaScript source that is commonly embedded in browser <script> elements. Before the fix, static template text containing </script> was emitted unchanged.

Recommendation

Update the handlebars package to the latest compatible version. Followings are version details:

  • Affected version(s): >= 4.0.0, <= 4.7.9
  • Patched version(s): 4.7.10

References

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Related Issues

See something that needs correcting? Let us knowUpdated October 08, 2026