MAL-2026-18352 Malicious code in csec-form-validator (npm)
- Package
- csec-form-validator
- Registry
- npm
What is MAL-2026-18352?
MAL-2026-18352 is a malicious package in csec-form-validator, published on 27 Oct 2026.
Official description
The package consists of two files with a pre-release version suffix (0.0.0-stage) suggesting a placeholder or staging publication. No install-time lifecycle execution, no network I/O, no credential or environment reads, no filesystem writes outside the package directory, and no obfuscated or dynamically fetched code were observed. The package exposes no behavior that affects an installer's machine, credentials, or dependency resolution.
Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
What should I do about MAL-2026-18352?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.
Sources
Also known as GHSA-wh86-6qm8-xgw2.