# MAL-2026-843: Malicious code in requests-core-plugin (PyPI)


- **Type:** Malicious package
- **Package:** `requests-core-plugin` (PyPI)
- **Published:** 10 Feb 2026

## What is MAL-2026-843?

MAL-2026-843 is a malicious package in requests-core-plugin, published on 10 Feb 2026. 

### Official description

During installation, package loads obfuscated code that then downloads and starts an executable. The final executable is identified as malware and appears to have infostealer capabilities (collecting browser and Discord data).

---

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-02-requests-core-plugin

Reasons (based on the campaign):

 - malware

 - The package overrides the install command in setup.py to execute malicious code during installation.

 - impersonation

 - obfuscation

 - infostealer

## What should I do about MAL-2026-843?

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-2026-843 is a malicious package: requests-core-plugin (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-2026-843/ (Markdown: https://insights.sbomify.com/MAL-2026-843/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-843

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-843/
Summaries are generated and may contain mistakes; the official description above is the record.