CVE-2026-106444 (GCVE-0-2026-106444)
Vulnerability from cvelistv5
Published
2026-10-06 19:01
Modified
2026-10-06 19:48
Severity ?
4.7 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE
  • CWE-116 - Improper Encoding or Escaping of Output
Summary
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.
References
Impacted products
Vendor Product Version
handlebars-lang handlebars.js Version: >= 4.0.0, < 4.7.10
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