MAL-2025-47787 Malicious code in mevguard (PyPI)
Malicious package
Published
MAL-2025-47787 is a malicious package: mevguard (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-2025-47787/ (Markdown: https://insights.sbomify.com/MAL-2025-47787/index.md)
- Package
- mevguard
- Registry
- PyPI
What is MAL-2025-47787?
MAL-2025-47787 is a malicious package in mevguard, published on 14 Sep 2025.
Official description
The obfuscated code provides "initialize_session" function that exfiltrates the provided argument.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-09-mevguard
Reasons (based on the campaign):
action-hidden-in-lib-usage
exfiltration-generic
obfuscation
What should I do about MAL-2025-47787?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.