Brace expansion is a lightweight JavaScript library providing brace expansion functionality similar to that found in shells like sh and bash. Versions 1.1.6 and 1.1.7 share core functionality, offering developers a convenient way to generate strings based on patterns containing brace-enclosed sequences, facilitating tasks like generating multiple file names or configuration options. Both versions depend on "concat-map" and "balanced-match" for efficient string manipulation and accurate matching of balanced characters within the brace expressions.
The key difference between the versions lies in the included development dependencies, and the specific date. Version 1.1.7 introduces "matcha" as a dev dependency, which is a testing framework used for evaluating the library's performance and ensuring code quality. Version 1.1.6 did not have this dependency although it uses "tape". This suggests a focus on improving the testing and performance evaluation process in the newer release. Developers looking for a stable and well-tested brace expansion library will find benefit from the later version because it includes more expansive testing tools. The small version increment suggests it is a bug fix release or minor update, not a breaking change. Users should consider updating to the latest version to get any testing and performance evaluations. Also brace-expansion 1.1.7 was released on 2017-04-07, while brace-expansion 1.1.6 was released much earlier on 2016-07-20.
All the vulnerabilities related to the version 1.1.7 of the package
brace-expansion Regular Expression Denial of Service vulnerability
A vulnerability was found in juliangruber brace-expansion up to 1.1.11/2.0.1/3.0.0/4.0.0. It has been rated as problematic. Affected by this issue is the function expand of the file index.js. The manipulation leads to inefficient regular expression complexity. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 1.1.12, 2.0.2, 3.0.1 and 4.0.1 is able to address this issue. The name of the patch is a5b98a4f30d7813266b221435e1eaaf25a1b0ac5. It is recommended to upgrade the affected component.
