CVE-2026-33940 Handlebars.js has JavaScript Injection via AST Type Confusion when passing an object as dynamic partial

Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, a crafted object placed in the template context can bypass all conditional guards in resolvePartial and cause invokePartial to return undefined. The Handlebars runtime then treats the...