Babel Plugin Transform Async to Generator, a crucial tool for developers targeting ES2015 environments, enables the seamless use of async/await syntax. Version 6.4.6 builds upon the foundation of 6.4.5, primarily by updating its dependency on babel-helper-remap-async-to-generator to version 6.4.6. This seemingly small change likely incorporates bug fixes, performance improvements, or enhanced compatibility within the async-to-generator transformation process. While the core functionality of transpiling async functions into ES2015 generators remains consistent, the updated helper ensures a more robust and refined transformation.
Both versions share key features: they rely on babel-plugin-syntax-async-functions for parsing async/await syntax and babel-runtime for necessary runtime support. This ensures that developers can confidently use async/await in their code, knowing it will be correctly converted for older JavaScript engines. Developers should favour the latest version, 6.4.6, to benefit from the latest enhancements and bug fixes in the underlying helper library. The library is licensed under the MIT license allowing a wide range of usage scenarios, both commercial and personal projects. Each version can installed from the npm registry using standard package managament tools. Developers can find the oficial repository in Github, under the babel/babel project.
All the vulnerabilities related to the version 6.4.6 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