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Malicious package

ctf2libxmljs2npm

Advisory published Updated

ctf2libxmljs2 is a confirmed malicious npm package (MAL-2025-191571) 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 ctf2libxmljs2 (npm)

MAL-2025-191571
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall ctf2libxmljs2

What this malware does

The package ctf2libxmljs2 was found to contain malicious code.

Malicious versions

1 flagged
0.30.2

Indicators of compromise (SHA-256)

d7b9e4fe10e07d12bf96ada0392b3d01a59a259dd554620116748f4803649aaf
de69afa73f1f4886ac05efb1fce080314b4a0bc5f0a122bb50e7bd03f945db9b

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for ctf2libxmljs2 (version 0.30.2).

  2. If you installed it — respond

    Remove ctf2libxmljs2 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 ctf2libxmljs2 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. ctf2libxmljs2 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-2025-05712

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks ctf2libxmljs2-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

ctf2libxmljs2 (npm) malicious package — MAL-2025-191571 | O3 Security