eslint-commit-parsernpm
Advisory published Updated
eslint-commit-parser is a confirmed malicious npm package (MAL-2026-6567) that executes malicious code on install (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in eslint-commit-parser (npm)
What this malware does
The package is published under the name eslint-commit-parser but its contents are a verbatim copy of the supertest HTTP-testing library — package.json carries supertest's description ("SuperAgent driven library for testing HTTP servers") and repository URL (https://github.com/ladjs/supertest.git), and the shipped source is supertest's. A developer who installs eslint-commit-parser expecting an ESLint commit parser receives unrelated code. package.json additionally declares a runtime dependency on express-mocha-test@^0.0.1, but no file in the tarball requires or imports that module — its only effect on the installer is to be resolved and installed alongside the carrier. The combination of a deceptive package name, contents that have no relation to the advertised identity, and an unused low-version unfamiliar transitive is the standard namespace-abuse / dependency-confusion carrier shape: the host package is hollow with respect to its declared identity and its purpose on install is to drag express-mocha-test onto the installer's machine.
Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
The OpenSSF Package Analysis project identified 'eslint-commit-parser' @ 1.0.0 (npm) as malicious.
It is considered malicious because:
- The package communicates with a domain associated with malicious activity.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for eslint-commit-parser (version 1.0.0).
If you installed it — respond
Remove eslint-commit-parser 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 activity or persistence.
Did it already run?
If eslint-commit-parser was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
- OpenSSF: Package Analysis · finder
Detect & block this
O3 blocks eslint-commit-parser-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.