Description
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.
Recommendation
Update the handlebars package to the latest compatible version. Followings are version details:
- Affected version(s): >= 4.0.0, <= 4.7.8
- Patched version(s): 4.7.9
References
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Start a free scanRelated Issues
- Handlebars.js has JavaScript Injection via AST Type Confusion by tampering @partial-block - CVE-2026-33938
- Handlebars.js has JavaScript Injection via AST Type Confusion - CVE-2026-33937
- Handlebars.js has JavaScript Injection via AST Type Confusion when passing an object as dynamic partial - CVE-2026-33940
- fast-xml-parser has an entity encoding bypass via regex injection in DOCTYPE entity names - CVE-2026-25896
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See something that needs correcting? Let us knowUpdated March 30, 2026