brace-expansion is a lightweight npm package providing brace expansion functionality, mirroring the behavior found in shells like sh and bash. It allows developers to generate strings based on patterns containing braces, commas, and ranges. Version 1.0.0, released in November 2014, marks a notable upgrade from the earlier 0.0.0 version, released in October 2013.
The primary difference lies in the dependency versions. While both rely on concat-map at version 0.0.0, version 1.0.0 updates balanced-match to "^0.2.0" from "0.0.0" in the older version. This indicates a refinement in how the package handles balanced delimiters within the brace expressions, potentially addressing bugs or adding features related to more complex or nested brace patterns. The tape devDependency remains consistent across both versions, suggesting a stable testing environment.
For developers considering using brace-expansion, the update to balanced-match in version 1.0.0 might be critical, particularly if their expansions involve intricate or deeply nested brace structures. Reviewing the changes between balanced-match 0.0.0 and 0.2.0 would provide further clarity on the specific improvements. The package's MIT license, consistent author and repository details across versions, and clear description highlight its open-source nature and ease of integration into various projects. The releaseDate indicates continued maintenance and a degree of maturity for version 1.0.0.
All the vulnerabilities related to the version 1.0.0 of the package
ReDoS in brace-expansion
Affected versions of brace-expansion are vulnerable to a regular expression denial of service condition.
var expand = require('brace-expansion');
expand('{,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,\n}');
Update to version 1.1.7 or later.
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.