Malicious code in tabbables (npm)
Description
The npm package 'tabbables' version 45.0.0 contains a malicious self-referential dependency that points to an external URL serving arbitrary code. Installing this package executes lifecycle scripts from an untrusted source without integrity checks, potentially compromising the host system. The package's index.js is inert, making the external tarball the primary attack vector. Any system with this package installed should be considered fully compromised, and all secrets on that system should be rotated immediately.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The 'tabbables' npm package version 45.0.0 declares a dependency on itself using a raw HTTPS URL (https://repo.securityctrl.com/tabbables) instead of a version range from the npm registry. This causes npm to fetch and install a tarball from an untrusted external source during installation, executing any lifecycle scripts it contains without integrity verification or provenance. The shipped index.js is inert, so the malicious payload is delivered solely via the external tarball, which can be changed at any time by the controller of repo.securityctrl.com. This creates a dependency confusion scenario with an implausibly high version number competing with internal packages of the same name. The package is considered fully malicious, and any system running it is likely compromised.
Potential Impact
Systems that have installed or are running the 'tabbables' package version 45.0.0 are considered fully compromised. The malicious package can execute arbitrary code during installation, potentially allowing attackers full control over the affected system. All secrets and keys stored on the compromised system should be rotated immediately from a different, trusted machine. Removing the package alone does not guarantee removal of all malicious software or backdoors introduced by the package.
Defensive Guidance
Remove the 'tabbables' package version 45.0.0 immediately from all affected systems. Rotate all secrets, keys, and credentials that were stored or used on compromised machines from a separate, secure environment. Because the package executes arbitrary code during installation and may have fully compromised the system, consider rebuilding or thoroughly auditing affected systems. There is no official patch or fix available; the package itself is malicious. Avoid installing packages that declare dependencies via raw URLs without integrity checks.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-15524
- Osv Schema Version
- 1.7.4
- Ecosystems
- ["npm"]
Threat ID: 6a92f7e3acd9273b49e75d06
Added to database: 08/29/2026, 15:16:51 UTC
Last enriched: 09/09/2026, 20:38:08 UTC
Last updated: 10/02/2026, 09:49:54 UTC
Views: 24
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