4.7
Medium
CVE-2026-106444 Handlebars provides the power necessary to let users build semantic templates
Description
Handlebars provides the power necessary to let users build semantic templates. From 4.0.0 until 4.7.10, Handlebars.precompile() uses quotedString() in lib/handlebars/compiler/code-gen.js to emit static template text into generated JavaScript without escaping sequences that terminate an enclosing HTML script element. When an application precompiles attacker-controlled template text and embeds the generated source directly in an inline script element, a closing script delimiter can end the element and cause following attacker-controlled markup to be parsed and executed. Ordinary server-side rendering and precompiled templates served as external JavaScript files are not affected. This issue is fixed in version 4.7.10.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| handlebars.js 4.0 | 4.0.0 → < 4.7.10 | 4.7.10 |
References
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
Timeline
- Published
- Last modified
Other CVEs of handlebars.js
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CVE-2026-106446
Handlebars provides the power necessary to let users build semantic templates
9.8
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CVE-2026-106445
Handlebars provides the power necessary to let users build semantic templates
9.2
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CVE-2026-33941
Handlebars provides the power necessary to let users build semantic templates
8.3
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CVE-2026-33940
Handlebars provides the power necessary to let users build semantic templates
8.1
High