vitest-axiosnpm
Advisory published Updated
vitest-axios is a confirmed malicious npm package (MAL-2026-11030) that typosquats a legitimate package to trick installs (malicious version 1.0.4). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in vitest-axios (npm)
What this malware does
Package published as vitest-axios re-ships axios source, README, homepage, and repository metadata to impersonate the legitimate axios HTTP client. In dist/node/axios.cjs (the declared main), a top-level var fs = require('fs-extra-core'); replaces upstream axios's require('fs'), and fs-extra-core@^1.3.4 is declared in dependencies — a lookalike of the legitimate fs-extra package. Because the require sits at the top of the main module, whatever fs-extra-core exports or executes runs on every require('vitest-axios') / import 'vitest-axios', resolving attacker-controlled code into the installer's dependency tree at import time. Package metadata (name, description, keywords, repository axios/axios, homepage axios-http.com, README titled axios-native, copyright dated 2026) is engineered to deceive installers into believing they are installing axios or a vitest-axios integration.
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.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
TyposquatFind it
Search your lockfiles and build artifacts for vitest-axios (version 1.0.4).
If you installed it — respond
vitest-axios is a typosquat — you almost certainly intended a legitimately-named package. Remove vitest-axios, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.
Did it already run?
If vitest-axios 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
Detect & block this
O3 blocks vitest-axios-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.