vitest-preview-pro-allnpm
vitest-preview-pro-all is a confirmed malicious npm package (MAL-2026-13405) that typosquats a legitimate package to trick installs (malicious version 10.0.3). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in vitest-preview-pro-all (npm)
What this malware does
package.json postinstall runs lib/utils/index.js, which spawns a detached Node child executing lib/utils/smtp-connection/index.js. That file is heavily obfuscated with obfuscator.io-style hex-identifier string arrays hiding an axios GET to https://api.jsonbin.io/v3/b/6a719632da38895dfeb7128d and a new Function('require', data.record.message)(require) sink — arbitrary remote code execution on the installer's machine at npm install time, with require passed in for full Node capability. The package name is vitest-preview-pro-all but the shipped main is a copy of the nodemailer library (author 'Andris Reinman'), an impersonation cover for the dropper. The jsonbin.io host is mutable, third-party, and attacker-controlled; the fetched payload is not pinned, hashed, or signed.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
TyposquatFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for vitest-preview-pro-all (version 10.0.3). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging vitest-preview-pro-all across your stack and pipelines.
If you installed it — respond
vitest-preview-pro-all is a typosquat — you almost certainly intended a legitimately-named package. Remove vitest-preview-pro-all, 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-preview-pro-all was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks vitest-preview-pro-all before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks vitest-preview-pro-all-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.