MalwarePublished 4 Nov 2026

mocha-ui-themes (npm) · Malicious Code

Affects mocha-ui-themesSource GCVE Database

Malicious package : remove mocha-ui-themes and rotate any secrets on hosts that installed it.

Data as of 4 Nov 2026, 05:00 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-18596

What to do

Remove mocha-ui-themes 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
npmmocha-ui-themes	Affected–	Fixed in–

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Description

The npm package 'mocha-ui-themes' contains malicious code that can fully compromise any computer on which it is installed or running. The compromise may allow an attacker to gain full control over the system, potentially exposing all stored secrets and keys. Immediate removal of the package is advised, but due to the severity of the compromise, simply removing the package may not eliminate all malicious software. Secrets and keys should be rotated from a different, trusted machine.

Impact

Full system compromise on any computer with the package installed or running. All secrets and keys stored on the compromised machine are at risk and should be considered exposed. The attacker may have persistent access beyond the presence of the package itself.

Defensive guidance

Remove the 'mocha-ui-themes' package immediately from all affected systems. Rotate all secrets and keys that were stored on the compromised machines using a different, trusted computer. Due to the potential for persistent compromise, further forensic analysis and system restoration may be necessary to ensure complete removal of malicious software.

Summary

The 'mocha-ui-themes' npm package has been identified as containing malicious code that compromises the host system completely. Installation or execution of this package can lead to full system compromise, including unauthorized access to secrets and keys stored on the machine. The threat is severe enough that removal of the package alone is insufficient to guarantee system integrity. The recommended response includes removing the package and rotating all sensitive credentials from a separate, uncompromised device.

References

github.com/advisories/GHSA-8wh7-jcx5-hv37 (opens in a new tab)

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What to do

Affected software

Description

AI analysisMachine-generated, updated 4 Nov 2026, 05:00 UTC

Technical details

References

Community reviews