MalwarePublished 14 Aug 2026Updated 24 Sep 2026

alelo-core (npm) · Malicious Code

Affects alelo-coreSource GCVE Database

Malicious package : remove alelo-core and rotate any secrets on hosts that installed it.

Data as of 26 Oct 2026, 16:16 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-14024

What to do

Remove alelo-core from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npmalelo-core	Affected =99.0.2 =99.0.0 =99.0.1	Fixed in–

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Description

The alelo-core npm package versions 99.0.0, 99.0.1, and 99.0.2 contain malicious lifecycle scripts that execute during installation. These scripts collect sensitive environment data including host identity, npm authentication tokens, and application secrets, then exfiltrate this information to an untrusted external IP address over HTTPS with certificate verification disabled. The package appears to be a dependency confusion lure, masquerading as an internal or branded package. No official patch or remediation guidance is currently available.

Impact

Installation of the affected alelo-core package versions leads to unauthorized exfiltration of sensitive environment data, including npm authentication tokens, application secrets, and host identity information, to an untrusted external server. This compromises the confidentiality of credentials and potentially allows attackers to impersonate the user or gain further access to systems relying on these secrets.

Defensive guidance

Until an official fix is available, avoid installing the alelo-core package versions 99.0.0, 99.0.1, and 99.0.2 from untrusted sources. Verify package authenticity and source before installation. Consider scanning existing environments for presence of this package and remove it if found.

Summary

The alelo-core npm package (versions 99.0.0, 99.0.1, 99.0.2) contains malicious preinstall and postinstall scripts. The preinstall.js script collects hostname, username, platform, current working directory, and the entire process environment variables, then sends this data to an external IP address via HTTPS without certificate verification. The postinstall script reads sensitive files such as .env, .npmrc (which may contain npm auth tokens), and package.json from the installer's directory tree, executes system commands 'whoami' and 'id', and sends the collected data to the same external IP. This results in exfiltration of credentials, tokens, and host identity information from the machine installing the package. The package name mimics an internal or branded package, consistent with a dependency confusion attack vector. The publisher identity is linked to an npm account oxy12@proton.me via a shipped login.ps1 script. No known exploits in the wild or vendor advisories are currently documented.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 14 Aug 2026, 16:51 UTC

Technical details

References

Community reviews