cardano-addresses-docsnpm
Advisory published Updated
cardano-addresses-docs is a confirmed malicious npm package (MAL-2026-5802) that typosquats a legitimate package to trick installs (malicious version 1.0.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in cardano-addresses-docs (npm)
What this malware does
package.json declares a preinstall hook (node index.js) that runs automatically on npm install. index.js collects host identifiers (os.hostname(), os.userInfo(), homedir, DNS servers, __dirname, full package.json) and reads /etc/passwd and /etc/hosts from the installer's machine, then HTTPS-POSTs the JSON payload to swsusmhg43tobo96re8dwn0vomudi46t.oastify.com — a Burp Collaborator out-of-band domain. The package has empty author, empty description, no real functionality, and a name impersonating the legitimate cardano-addresses Cardano library — consistent with a dependency-confusion / typosquat reconnaissance payload.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
TyposquatFind it
Search your lockfiles and build artifacts for cardano-addresses-docs (version 1.0.1).
If you installed it — respond
cardano-addresses-docs is a typosquat — you almost certainly intended a legitimately-named package. Remove cardano-addresses-docs, 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 cardano-addresses-docs 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 cardano-addresses-docs-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.