MAL-2026-2231 Malicious code in checkmarx.ast-results (VSCode:https://open-vsx.org)
Malicious package
Published
MAL-2026-2231 is a malicious package: checkmarx.ast-results (VSCode:https://open-vsx.org). Every version was published to cause harm.
Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.
Reference: https://insights.sbomify.com/MAL-2026-2231/ (Markdown: https://insights.sbomify.com/MAL-2026-2231/index.md)
- Package
- checkmarx.ast-results
- Registry
- VSCode:https://open-vsx.org
What is MAL-2026-2231?
MAL-2026-2231 is a malicious package in checkmarx.ast-results, published on 26 Mar 2026.
Official description
This extension is a compromised version of the offical Checkmarx VSCode extensions available on the Microsoft Marketplace, by the TeamPCP threat actor and related to the Trivy campaign.
The extension hunts for sensitive credentials and developer secrets for exfiltration. The extension also downloads a payload from an attacker controlled server. The malicious code will also try and maintain persistence using systemd.
What should I do about MAL-2026-2231?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.