Package Instance

npm CLI exposing sensitive information through logs
Versions of the npm CLI prior to 6.14.6 are vulnerable to an information exposure vulnerability through log files. The CLI supports URLs like `<protocol>://[<user>[:<password>]@]<hostname>[:<port>][:][/]<path>`. The password value is not redacted and is printed to stdout and also to any generated log files.

Arbitrary File Write in npm
Versions of the npm CLI prior to 6.13.3 are vulnerable to an Arbitrary File Write. It fails to prevent access to folders outside of the intended node_modules folder through the bin field. A properly constructed entry in the package.json bin field would allow a package publisher to create files on a user's system when the package is installed. It is only possible to affect files that the user running `npm install` has access to and it is not possible to over write files that already exist on disk.

This behavior is still possible through install scripts. This vulnerability bypasses a user using the --ignore-scripts install option.


## Recommendation

Upgrade to version 6.13.3 or later.

Duplicate Advisory: npm cli Uncontrolled Search Path Element Local Privilege Escalation Vulnerability
### Duplicate Advisory
This advisory has been withdrawn because describes a dependency bump and therefore, per [CVE CNA rule 4.1.12](https://www.cve.org/ResourcesSupport/AllResources/CNARules/#section_4-1_Vulnerability_Determination), is a duplicate of GHSA-34x7-hfp2-rc4v/CVE-2026-24842. Additionally, per https://github.com/npm/cli/issues/8939#issuecomment-3862719883, npm cli should not be listed as an affected product. This link is maintained to preserve external references.

### Original Description
npm cli Incorrect Permission Assignment Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of npm cli. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the handling of modules. The application loads modules from an unsecured location. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of a target user.

Exposure of Sensitive Information to an Unauthorized Actor
The CLI in npm before 2.15.1 and 3.x before 3.8.3, as used in Node.js 0.10 before 0.10.44, 0.12 before 0.12.13, 4 before 4.4.2, and 5 before 5.10.0, includes bearer tokens with arbitrary requests, which allows remote HTTP servers to obtain sensitive information by reading Authorization headers.

npm symlink reference outside of node_modules
Versions of the npm CLI prior to 6.13.3 are vulnerable to a symlink reference outside of node_modules. It is possible for packages to create symlinks to files outside of the`node_modules` folder through the `bin` field upon installation. A properly constructed entry in the package.json bin field would allow a package publisher to create a symlink pointing to arbitrary files on a user’s system when the package is installed. Only files accessible by the user running the `npm install` are affected.  

This behavior is still possible through install scripts. This vulnerability bypasses a user using the --ignore-scripts install option.


## Recommendation

Upgrade to version 6.13.3 or later.

npm Vulnerable to Global node_modules Binary Overwrite
Versions of  the npm CLI prior to 6.13.4 are vulnerable to a Global node_modules Binary Overwrite. It fails to prevent existing globally-installed binaries to be overwritten by other package installations. 

For example, if a package was installed globally and created a `serve` binary, any subsequent installs of packages that also create a `serve` binary would overwrite the first binary. This will not overwrite system binaries but only binaries put into the global node_modules directory.

This behavior is still allowed in local installations and also through install scripts. This vulnerability bypasses a user using the --ignore-scripts install option.


## Recommendation

Upgrade to version 6.13.4 or later.