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Malicious package

@vampirchik147/libxmljs2npm

Advisory published Updated

@vampirchik147/libxmljs2 is a confirmed malicious npm package (MAL-2026-1643) that executes malicious code on install (malicious version 0.19.7). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @vampirchik147/libxmljs2 (npm)

MAL-2026-1643
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @vampirchik147/libxmljs2

What this malware does

The package @vampirchik147/libxmljs2 was found to contain malicious code.

Malicious versions

1 flagged
0.19.7

Indicators of compromise (SHA-256)

d4870086853f586d5fff5ec848235dd16b8d2e5c224d0e43990b0dce09ba2c34
6f1f47e6141b6c2d1af00b86d33d71cac6c53f6e64f307e1533e4ae108560092

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for @vampirchik147/libxmljs2 (version 0.19.7).

  2. If you installed it — respond

    Remove @vampirchik147/libxmljs2 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 @vampirchik147/libxmljs2 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. @vampirchik147/libxmljs2 on npm has been identified as a malicious package (version 0.19.7 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-01074

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks @vampirchik147/libxmljs2-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

@vampirchik147/libxmljs2 (npm) malicious package — MAL-2026-1643 | O3 Security