MAL-2025-3541 Malicious code in express-cookie-parser (npm)
Malicious package
Published
MAL-2025-3541 is a malicious package: express-cookie-parser (npm). 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-2025-3541/ (Markdown: https://insights.sbomify.com/MAL-2025-3541/index.md)
- Package
- express-cookie-parser
- Registry
- npm
What is MAL-2025-3541?
MAL-2025-3541 is a malicious package in express-cookie-parser, published on 23 Apr 2025.
Official description
This package impersonates the popular 'cookie-parser' package. Remote code execution, persistence, self-deletion, and obfuscation found in the package's code confirm its malicious nature.
What should I do about MAL-2025-3541?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.