Babel preset stage 1 is a collection of Babel plugins designed to enable experimental JavaScript features that are currently under consideration for future ECMAScript standardization (stage 1 proposals). These features, while not yet finalized, offer developers a glimpse into the potential future of JavaScript and allow them to experiment with cutting-edge syntax and functionalities.
Comparing version 6.5.0 with the previous stable version 6.3.13, the primary difference lies in the release date and potentially some internal updates though the dependencies remain identical. Version 6.5.0 was released on February 7, 2016, while version 6.3.13 was released on December 4, 2015. While the core functionalities remain consistent, developers should always prefer the latest version (6.5.0 in this case) to benefit from any bug fixes, performance improvements, or compatibility updates that might have been introduced.
Both versions bundle essential plugins like transform-class-constructor-call, transform-class-properties, transform-decorators, and transform-export-extensions, along with the babel-preset-stage-2 preset. This combination enables features like class properties, decorators, and advanced export syntax. This preset is ideal for those wanting to adopt features that are still experimental and evolving, offering a chance to provide feedback and shape the future of JavaScript. Be aware that using stage 1 features comes with the understanding that these features are subject to change or removal before standardization and so should be carefully considered before deploying in production environments. Stage 1 features present opportunities to explore innovative coding styles.
All the vulnerabilities related to the version 6.5.0 of the package
Babel vulnerable to arbitrary code execution when compiling specifically crafted malicious code
Using Babel to compile code that was specifically crafted by an attacker can lead to arbitrary code execution during compilation, when using plugins that rely on the path.evaluate()or path.evaluateTruthy() internal Babel methods.
Known affected plugins are:
@babel/plugin-transform-runtime@babel/preset-env when using its useBuiltIns option@babel/helper-define-polyfill-provider, such as babel-plugin-polyfill-corejs3, babel-plugin-polyfill-corejs2, babel-plugin-polyfill-es-shims, babel-plugin-polyfill-regeneratorNo other plugins under the @babel/ namespace are impacted, but third-party plugins might be.
Users that only compile trusted code are not impacted.
The vulnerability has been fixed in @babel/traverse@7.23.2.
Babel 6 does not receive security fixes anymore (see Babel's security policy), hence there is no patch planned for babel-traverse@6.
@babel/traverse to v7.23.2 or higher. You can do this by deleting it from your package manager's lockfile and re-installing the dependencies. @babel/core >=7.23.2 will automatically pull in a non-vulnerable version.@babel/traverse and are using one of the affected packages mentioned above, upgrade them to their latest version to avoid triggering the vulnerable code path in affected @babel/traverse versions:
@babel/plugin-transform-runtime v7.23.2@babel/preset-env v7.23.2@babel/helper-define-polyfill-provider v0.4.3babel-plugin-polyfill-corejs2 v0.4.6babel-plugin-polyfill-corejs3 v0.8.5babel-plugin-polyfill-es-shims v0.10.0babel-plugin-polyfill-regenerator v0.5.3