# MAL-2025-47787: Malicious code in mevguard (PyPI)


- **Type:** Malicious package
- **Package:** `mevguard` (PyPI)
- **Published:** 14 Sep 2025

## 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.

## Fix prompt for AI coding agents

```text
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)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2025-47787

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From sbomify Insights: https://insights.sbomify.com/MAL-2025-47787/
Summaries are generated and may contain mistakes; the official description above is the record.