Affected: npm: @babel/helpers, npm: @babel/runtime, npm: @babel/runtime-corejs2, npm: @babel/runtime-corejs3

### Impact

When using Babel to compile [regular expression named capturing groups](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Regular_expressions/Named_capturing_group), Babel will generate a polyfill for the `.replace` method that has quadratic complexity on some specific replacement pattern strings (i.e. the second argument passed to `.replace`).

Your generated code is vulnerable if _all_ the following conditions are true: - You use Babel to compile [regular expression named capturing groups](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Regular_expressions/Named_capturing_group) - You use the `.replace` method on a regular expression that contains named capturing groups - **Your code uses untrusted strings as the second argument of `.replace`**

If you are using `@babel/preset-env` with the [`targets`](https://babeljs.io/docs/options#targets) option, the transform that injects the vulnerable code is automatically enabled if: - you use [_duplicated_ named capturing groups](https://github.com/tc39/proposal-duplicate-named-capturing-groups), and target any browser older than Chrome/Edge 126, Opera 112, Firefox 129, Safari 17.4, or Node.js 23 - you use any [named capturing groups](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Regular_expressions/Named_capturing_group), and target any browser older than Chrome 64, Opera 71, Edge 79, Firefox 78, Safari 11.1, or Node.js 10

You can verify what transforms `@babel/pr…