Which versions of pathfix are malicious?

The following npm versions of pathfix are flagged malicious: 3.0.10. Treat any of these as compromised.

How do I remediate pathfix if I installed it?

Remove pathfix from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound network activity or persistence. Use O3 Security's dependency scanner to confirm the package and its artifacts are fully purged across your stack.

Is pathfix part of a known attack campaign?

Yes — pathfix is associated with the IN-MAL-2026-006876 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

Can O3 Security detect pathfix in my codebase?

Yes. O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, blocking pathfix and packages like it before any post-install script runs.

Malicious package

pathfixnpm

Malicious code in pathfix (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-5989

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall pathfix

What this malware does

On require('pathfix'), index.js auto-invokes initPlugin(), which performs an HTTP GET to https://jsonkeeper.com/b/T1SVX, parses the response as JSON, and passes the cookie field to new Function.constructor('require',...) and immediately invokes the resulting function with the package's own require. This grants the attacker-mutable jsonkeeper paste full Node.js privileges (filesystem, child_process, network) on the installer's machine the moment the package is loaded. The package metadata describes itself as 'Stylus porting of normalize.css' and declares unrelated dependencies (express, sqlite3, axios, request); only request is actually used, and only to fetch the remote payload — a cover-story / trojan pattern. Anyone who installs and requires this package executes whatever code the attacker has placed at that paste URL at that moment.

Malicious versions

1 flagged

3.0.10

Indicators of compromise (SHA-256)

44585f45909a087f0880fc714e7fdc0977285884ea381e29c7b450ae7d5c2683

Frequently asked questions

No. pathfix on npm has been identified as a malicious package (version 3.0.10 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-006876

References

npmjs.com

Credits

Amazon Inspector · finder

Scan your dependencies

O3 Security blocks malicious packages like this at install time and in CI.

Supply-chain protection