MalwarePublished 6 Aug 2026

@zahlen/checkout (npm) · Malicious Code

Affects @zahlen/checkoutSource GCVE Database

Malicious package : remove @zahlen/checkout and rotate any secrets on hosts that installed it.

Data as of 6 Aug 2026, 18:40 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-13391

What to do

Remove @zahlen/checkout from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npm@zahlen/checkout	Affected =0.2.2	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

The npm package @zahlen/checkout version 0.2.2 is identified as malicious. Installing or running this package can lead to a full compromise of the affected computer. The package does not exhibit typical malicious behaviors such as remote code fetching or credential scraping, but its presence indicates a high risk. Immediate removal of the package and rotation of all secrets and keys from a different, uncompromised computer is strongly recommended.

Impact

Any computer with @zahlen/checkout version 0.2.2 installed or running should be considered fully compromised. Attackers may have gained full control, putting all stored secrets and keys at risk. Removing the package alone may not eliminate all malicious components introduced by the package, so secret rotation and further remediation are necessary.

Defensive guidance

Remove the @zahlen/checkout package version 0.2.2 immediately from all affected systems. Rotate all secrets and keys stored on the compromised computer from a separate, trusted machine. Since full control may have been given to an attacker, further forensic analysis and remediation may be required.

Summary

The npm package @zahlen/checkout version 0.2.2 has been flagged as malicious by the GHSA-malware source. Although static analysis and code path tracing did not reveal typical malicious behaviors like remote content execution or credential exfiltration, the package is considered fully compromising to any system where it is installed or running. This implies that the package likely contains hidden or obfuscated malicious code that grants an attacker full control over the system. The advisory recommends immediate removal and secret rotation to mitigate impact.

References

Community reviews

Loading reviews…

What to do

Affected software

Description

AI analysisMachine-generated, updated 6 Aug 2026, 18:40 UTC

Technical details

References

Community reviews