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Malicious package

libxmljs2superbanknpm

Advisory published Updated

libxmljs2superbank is a confirmed malicious npm package (MAL-2025-49419) that executes malicious code on install (malicious versions 0.30.2, 0.30.4, 0.31.0…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in libxmljs2superbank (npm)

MAL-2025-49419
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall libxmljs2superbank

What this malware does

The package libxmljs2superbank was found to contain malicious code.

Malicious versions

5 flagged
0.30.20.30.40.31.00.31.1999.0.0

Indicators of compromise (SHA-256)

d241c65cb2ee896485fe87e83b157c504297c07f15718f59e7eeecbadf4a977d
7641393c334a2c740e595ed1f50e3b02b3d7c94dcac3a18974306f7c3f2b4d6c

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for libxmljs2superbank (5 malicious versions).

  2. If you installed it — respond

    Remove libxmljs2superbank 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 libxmljs2superbank 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. libxmljs2superbank on npm has been identified as a malicious package (versions 0.30.2, 0.30.4, 0.31.0, 0.31.1, 999.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-06397

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks libxmljs2superbank-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

libxmljs2superbank (npm) malicious package — MAL-2025-49419 | O3 Security