Babeljs

Babeljs maintains a JavaScript transpiler and polyfill-plugin ecosystem that enables code compatibility across diverse browser and runtime environments, with its vulnerability footprint concentrated in the core Babel tool and a set of polyfill-provider plugins. The durable signal centers on input-validation weaknesses, including incomplete filtering of disallowed inputs and incorrect comparison logic, which are characteristic of transformation and injection-mitigation layers in transpiler tooling. Current exploitation activity, severity, and exposure counts are shown alongside this summary.