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Malicious package

libxmljs2var-ctfnpm

Advisory published Updated

libxmljs2var-ctf is a confirmed malicious npm package (MAL-2026-1783) that executes malicious code on install (malicious version 0.30.3). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in libxmljs2var-ctf (npm)

MAL-2026-1783
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall libxmljs2var-ctf

What this malware does

The package libxmljs2var-ctf was found to contain malicious code.

Malicious versions

1 flagged
0.30.3

Indicators of compromise (SHA-256)

24f8360117549a80a884bd2085f63b91940e81d338d34fae5ed6c075d79d4307
01c9273d9a31b1c550935b2367e8a3ba1bedb4668f432fec423a01bdc314ea0e

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for libxmljs2var-ctf (version 0.30.3).

  2. If you installed it — respond

    Remove libxmljs2var-ctf 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.

  3. Did it already run?

    If libxmljs2var-ctf 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

No. libxmljs2var-ctf on npm has been identified as a malicious package (version 0.30.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-01416

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks libxmljs2var-ctf-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.

Explore

libxmljs2var-ctf (npm) malicious package — MAL-2026-1783 | O3 Security