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Malicious package

tabbablesnpm

Advisory published Updated

tabbables is a confirmed malicious npm package (MAL-2026-15524) that executes malicious code on install (malicious version 45.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in tabbables (npm)

MAL-2026-15524
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall tabbables

What this malware does

package.json at line 11 declares a dependency whose key equals the package's own name (tabbables) and whose value is the raw HTTPS URL https://repo.securityctrl.com/tabbables rather than a registry version range. On npm install, npm fetches whatever tarball that URL currently serves and installs it, executing any lifecycle scripts it contains, with no version pin, no integrity/hash check, and no registry provenance. The shipped index.js is an inert stub, so the manifest URL is the sole payload-delivery mechanism; the tarball's behavior can be changed at any time by whoever controls repo.securityctrl.com. The self-referential dependency key also produces a dependency-confusion shape (an implausibly high 45.0.0 version competing with any internal package of the same name).

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

1 flagged
45.0.0

Indicators of compromise (SHA-256)

2fc629ecaf81d15034bbba33363e63776d106e6f58932e889baa4cb748b689eb
580578f2de6ca207ca37218f58ff798855d032cbd2d824c6a6159ad194bc7303

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for tabbables (version 45.0.0).

  2. If you installed it — respond

    Remove tabbables 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 tabbables 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. tabbables on npm has been identified as a malicious package (version 45.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-019081GHSA-4g4c-9232-9cwv

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks tabbables-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

tabbables (npm) malicious package — MAL-2026-15524 | O3 Security