Serve-static is a popular npm package designed to serve static files in web applications, commonly used with Express.js. Version 1.12.3 introduces a minor update compared to version 1.12.2, primarily affecting its dependencies and development tools.
The key difference lies in the send dependency, upgraded from version 0.15.2 to 0.15.3. While this might seem insignificant, updates to send could contain important bug fixes, performance improvements, or security patches relevant to how files are delivered. Developers should consult the send package's changelog for detailed information about this specific patch.
Another update is in eslint-plugin-markdown, updated from beta 4 to beta 6. This update will affect developers contributing to serve-static itself, or those who lint their markdown files in projects that depend on serve-static to run tests.
For developers using serve-static, the core functionality remains consistent between the two versions. You can continue to use it to efficiently serve static assets like HTML, CSS, JavaScript, and images. The library offers options for setting cache headers, handling different file types, and configuring directory listings (although usually disabled for security in production).
The other listed devDependencies, which include tools like mocha, eslint, istanbul, and supertest, are mainly utilized for testing, code quality, and development purposes, ensuring the stability and maintainability of the serve-static package itself. Upgrading to 1.12.3 ensures you benefit from the latest improvements and bug fixes within the send dependency and the markdown linter improving project stability.
All the vulnerabilities related to the version 1.12.3 of the package
serve-static vulnerable to template injection that can lead to XSS
passing untrusted user input - even after sanitizing it - to redirect() may execute untrusted code
this issue is patched in serve-static 1.16.0
users are encouraged to upgrade to the patched version of express, but otherwise can workaround this issue by making sure any untrusted inputs are safe, ideally by validating them against an explicit allowlist
successful exploitation of this vector requires the following:
send vulnerable to template injection that can lead to XSS
passing untrusted user input - even after sanitizing it - to SendStream.redirect() may execute untrusted code
this issue is patched in send 0.19.0
users are encouraged to upgrade to the patched version of express, but otherwise can workaround this issue by making sure any untrusted inputs are safe, ideally by validating them against an explicit allowlist
successful exploitation of this vector requires the following:
mime Regular Expression Denial of Service when MIME lookup performed on untrusted user input
Affected versions of mime are vulnerable to regular expression denial of service when a mime lookup is performed on untrusted user input.
Update to version 2.0.3 or later.
debug Inefficient Regular Expression Complexity vulnerability
A vulnerability classified as problematic has been found in debug-js debug up to 3.0.x. This affects the function useColors of the file src/node.js. The manipulation of the argument str leads to inefficient regular expression complexity. Upgrading to version 3.1.0 is able to address this issue. The name of the patch is c38a0166c266a679c8de012d4eaccec3f944e685. It is recommended to upgrade the affected component. The identifier VDB-217665 was assigned to this vulnerability. The patch has been backported to the 2.6.x branch in version 2.6.9.
Regular Expression Denial of Service in debug
Affected versions of debug are vulnerable to regular expression denial of service when untrusted user input is passed into the o formatter.
As it takes 50,000 characters to block the event loop for 2 seconds, this issue is a low severity issue.
This was later re-introduced in version v3.2.0, and then repatched in versions 3.2.7 and 4.3.1.
Version 2.x.x: Update to version 2.6.9 or later. Version 3.1.x: Update to version 3.1.0 or later. Version 3.2.x: Update to version 3.2.7 or later. Version 4.x.x: Update to version 4.3.1 or later.
Regular Expression Denial of Service in fresh
Affected versions of fresh are vulnerable to regular expression denial of service when parsing specially crafted user input.
Update to version 0.5.2 or later.
