Search: CVE-2026-106446

CVE-2026-106446 is a critical code injection vulnerability in handlebars.js versions 4.0.0 up to but not including 4.7.10. The vulnerability arises because Handlebars.compile() and Handlebars.precompile() accept pre-parsed AST objects without fully validating all node values, allowing untrusted input objects to inject arbitrary JavaScript code. This can lead to remote code execution on the server or malicious code execution in client environments where precompiled templates are used. Applications passing untrusted objects instead of strings to these functions are affected. The vulnerability has a CVSS score of 9.8, indicating critical severity.