A vulnerability has been identified in Node.js, specifically affecting the handling of drive names in the Windows environment. Certain Node.js functions do not treat drive names as special on Windows. As a result, although Node.js assumes a relative path, it actually refers to the root directory. On Windows, a path that does not start with the file separator is treated as relative to the current directory. This vulnerability affects Windows users of `path.join` API.

NOTE: use of the CVE List to report that a product is unsupported, without reference to a specific defect, is novel and the CVE Program is actively assessing both the validity and potential value of this approach. This CVE has been issued to inform users that they are using End-of-Life (EOL) versions of Node.js. These versions are no longer supported and do not receive updates, including security patches. The continued use of EOL versions may expose systems to potential security risks due to unaddressed software vulnerabilities or dependencies (CWE-1104: Use of Unmaintained Third-Party Components). Users are advised to upgrade to actively supported versions of Node.js to ensure continued security updates and support.

NOTE: use of the CVE List to report that a product is unsupported, without reference to a specific defect, is novel and the CVE Program is actively assessing both the validity and potential value of this approach. This CVE has been issued to inform users that they are using End-of-Life (EOL) versions of Node.js. These versions are no longer supported and do not receive updates, including security patches. The continued use of EOL versions may expose systems to potential security risks due to unaddressed software vulnerabilities or dependencies (CWE-1104: Use of Unmaintained Third-Party Components). Users are advised to upgrade to actively supported versions of Node.js to ensure continued security updates and support.

This CVE has been issued to inform users that they are using End-of-Life (EOL) versions of Node.js. These versions are no longer supported and do not receive updates, including security patches. The continued use of EOL versions may expose systems to potential security risks due to unaddressed software vulnerabilities or dependencies (CWE-1104: Use of Unmaintained Third-Party Components). NOTE: use of the CVE List to report that a product is unsupported, without reference to a specific defect, is novel and the CVE Program is actively assessing both the validity and potential value of this approach. Users are advised to upgrade to actively supported versions of Node.js to ensure continued security updates and support.

With the aid of the diagnostics_channel utility, an event can be hooked into whenever a worker thread is created. This is not limited only to workers but also exposes internal workers, where an instance of them can be fetched, and its constructor can be grabbed and reinstated for malicious usage. This vulnerability affects Permission Model users (--permission) on Node.js v20, v22, and v23.

Undici is an HTTP/1.1 client. Starting in version 4.5.0 and prior to versions 5.28.5, 6.21.1, and 7.2.3, undici uses `Math.random()` to choose the boundary for a multipart/form-data request. It is known that the output of `Math.random()` can be predicted if several of its generated values are known. If there is a mechanism in an app that sends multipart requests to an attacker-controlled website, they can use this to leak the necessary values. Therefore, an attacker can tamper with the requests going to the backend APIs if certain conditions are met. This is fixed in versions 5.28.5, 6.21.1, and 7.2.3. As a workaround, do not issue multipart requests to attacker controlled servers.

The Permission Model assumes that any path starting with two backslashes \ has a four-character prefix that can be ignored, which is not always true. This subtle bug leads to vulnerable edge cases.

Bypass incomplete fix of CVE-2024-27980, that arises from improper handling of batch files with all possible extensions on Windows via child_process.spawn / child_process.spawnSync. A malicious command line argument can inject arbitrary commands and achieve code execution even if the shell option is not enabled.

A vulnerability has been identified in Node.js, affecting users of the experimental permission model when the --allow-fs-write flag is used. Node.js Permission Model do not operate on file descriptors, however, operations such as fs.fchown or fs.fchmod can use a "read-only" file descriptor to change the owner and permissions of a file.

Undici is an HTTP/1.1 client, written from scratch for Node.js. Depending on network and process conditions of a `fetch()` request, `response.arrayBuffer()` might include portion of memory from the Node.js process. This has been patched in v6.19.2.