MAL-2026-1433 Malicious code in kvstore-pb2-grpc (PyPI)
Malicious package
Published
MAL-2026-1433 is a malicious package: kvstore-pb2-grpc (PyPI). 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-2026-1433/ (Markdown: https://insights.sbomify.com/MAL-2026-1433/index.md)
- Package
- kvstore-pb2-grpc
- Registry
- PyPI
What is MAL-2026-1433?
MAL-2026-1433 is a malicious package in kvstore-pb2-grpc, published on 15 Mar 2026.
Official description
During import, package decrypts and runs a malicious executable. The executable is hidden in an encoded and xored form in the JSON resource file.
This is a follow up of the campaign 2026-03-fastapi-middleware-cors
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-03-ariadne-federation
Reasons (based on the campaign):
malware
obfuscation
dependency-confusion
typosquatting
What should I do about MAL-2026-1433?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.