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Malicious package

airbnb-react-router-legacynpm

Advisory published Updated

airbnb-react-router-legacy is a confirmed malicious npm package (MAL-2025-190604) that executes malicious code on install (malicious version 97.1.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in airbnb-react-router-legacy (npm)

MAL-2025-190604
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall airbnb-react-router-legacy

What this malware does

The package airbnb-react-router-legacy was found to contain malicious code.

The OpenSSF Package Analysis project identified 'airbnb-react-router-legacy' @ 97.1.0 (npm) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.

Malicious versions

1 flagged
97.1.0

Indicators of compromise (SHA-256)

1b1138ad535181a63df363ed1d9c8c20e762dc5a528a57b098494d878b61a837
dbad26f42924fe90947efc559b87354b3cc495e2aad542844029ebfe7d0ec3d9

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for airbnb-react-router-legacy (version 97.1.0).

  2. If you installed it — respond

    Remove airbnb-react-router-legacy 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 airbnb-react-router-legacy 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. airbnb-react-router-legacy on npm has been identified as a malicious package (version 97.1.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Credits

  • Amazon Inspector · finder
  • OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks airbnb-react-router-legacy-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

airbnb-react-router-legacy (npm) malicious package — MAL-2025-190604 | O3 Security