@babel/runtime is a crucial package for Babel users, providing modular runtime helpers that enable Babel-transformed code to function correctly in various environments. Version 7.22.11, released on August 24, 2023, represents a minor update over version 7.22.10 which was released on August 7, 2023. Both versions maintain the same core functionality and dependencies, relying on regenerator-runtime "^0.14.0" for generator function support. They are both licensed under the MIT license. The file count is the same (211), but unpacked size saw a small decrease from 281793 bytes to 244147, potentially suggesting improvements in code optimization or removal of unnecessary files. While the change appears small at first glance, developers should note the reduction in unpacked size, which might be welcomed by those concerned with bundle size and footprint.
Given the relatively short interval between releases and the identical dependency structure, the update likely encompasses bug fixes, performance enhancements, or internal refactoring rather than significant new features. Developers are advised to upgrade to the latest version mainly to benefit from these potential improvements and to ensure they are using the most stable and reliable iteration of the runtime helpers, minimizing the risk of encountering known issues and optimizing code performance. The change from 7.22.10 to 7.22.11, while seemingly incremental, underscores Babel's continuous commitment to refining its tools and providing a robust foundation for modern JavaScript development.
All the vulnerabilities related to the version 7.22.11 of the package
Babel has inefficient RegExp complexity in generated code with .replace when transpiling named capturing groups
When using Babel to compile regular expression named capturing groups, 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:
.replace method on a regular expression that contains named capturing groups.replaceIf you are using @babel/preset-env with the targets option, the transform that injects the vulnerable code is automatically enabled if:
You can verify what transforms @babel/preset-env is using by enabling the debug option.
This problem has been fixed in @babel/helpers and @babel/runtime 7.26.10 and 8.0.0-alpha.17, please upgrade. It's likely that you do not directly depend on @babel/helpers, and instead you depend on @babel/core (which itself depends on @babel/helpers). Upgrading to @babel/core 7.26.10 is not required, but it guarantees that you are on a new enough @babel/helpers version.
Please note that just updating your Babel dependencies is not enough: you will also need to re-compile your code.
If you are passing user-provided strings as the second argument of .replace on regular expressions that contain named capturing groups, validate the input and make sure it does not contain the substring $< if it's then not followed by > (possibly with other characters in between).
This vulnerability was reported and fixed in https://github.com/babel/babel/pull/17173.