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Malicious package

libxmljs2v2npm

Advisory published Updated

libxmljs2v2 is a confirmed malicious npm package (MAL-2026-1781) that executes malicious code on install (malicious version 0.30.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in libxmljs2v2 (npm)

MAL-2026-1781
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall libxmljs2v2

What this malware does

The package libxmljs2v2 was found to contain malicious code.

Malicious versions

1 flagged
0.30.2

Indicators of compromise (SHA-256)

b381a1ea0eef3aacb56295643116f3543ae656d42290550c939db340c17ea9c2
a5fa602a5ab85b1160b292a89e2a2e96a612f35e672eef62da700fe7fe8a45d7

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for libxmljs2v2 (version 0.30.2).

  2. If you installed it — respond

    Remove libxmljs2v2 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 libxmljs2v2 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. libxmljs2v2 on npm has been identified as a malicious package (version 0.30.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-01414

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks libxmljs2v2-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

libxmljs2v2 (npm) malicious package — MAL-2026-1781 | O3 Security