MalwarePublished 29 Oct 2025

sort-class-members (npm) · Malicious Code

Affects sort-class-membersSource GCVE Database

Malicious package : remove sort-class-members and rotate any secrets on hosts that installed it.

Data as of 29 Oct 2026, 23:06 UTC

Classification

Malicious package

Published to npm · OSV MAL-2025-49042

What to do

Remove sort-class-members 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
npmsort-class-members	Affected =9.9.0	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 'sort-class-members' version 9.9.0 contains malicious code that installs a dependency from a custom domain which executes an information stealer during installation. This malware targets sensitive tokens related to npm, git, and CI/CD environments. Any system with this package installed should be considered fully compromised, and all secrets and keys stored on that system must be rotated immediately from a different, secure machine.

Impact

Systems with 'sort-class-members' version 9.9.0 installed are at high risk of compromise through theft of sensitive tokens and credentials related to npm, git, and CI/CD pipelines. This can lead to unauthorized access to source code repositories, package publishing rights, and continuous integration/deployment environments. The compromise is severe enough that all secrets and keys on the affected system should be rotated immediately from a secure environment, as attackers may have persistent access.

Defensive guidance

Remove the 'sort-class-members' package version 9.9.0 immediately from all affected systems. Rotate all secrets, tokens, and keys stored on the compromised systems from a different, secure machine. Because the package installation may have resulted in a full system compromise, consider conducting a thorough forensic analysis and system rebuild to ensure complete removal of malicious software. Monitor for any unauthorized activity related to npm, git, and CI/CD environments.

Summary

The 'sort-class-members' npm package version 9.9.0 was found to include a malicious dependency that runs an info stealer during its installation process. This info stealer specifically targets and exfiltrates npm, git, and other CI/CD tokens, potentially granting attackers unauthorized access to development and deployment pipelines. Due to the nature of the compromise, systems with this package installed are considered fully compromised, and removal of the package alone does not guarantee elimination of all malicious software introduced.

References

Community reviews

Loading reviews…

What to do

Affected software

Description

AI analysisMachine-generated, updated 29 Oct 2026, 23:06 UTC

Technical details

References

Community reviews