CVE-2026-106446 Handlebars: JavaScript Injection via AST Type Confusion in compile (Program.blockParams)

Handlebars provides the power necessary to let users build semantic templates. From 4.0.0 until 4.7.10, Handlebars.compile and Handlebars.precompile accept pre-parsed AST objects while validating only selected PathExpression, NumberLiteral, and BooleanLiteral values. This issue bypasses the AST...