# MAL-2026-17191: Malicious code in requests-cache-utils (PyPI)


- **Type:** Malicious package
- **Package:** `requests-cache-utils` (PyPI)
- **Published:** 26 Sep 2026

## What is MAL-2026-17191?

MAL-2026-17191 is a malicious package in requests-cache-utils, published on 26 Sep 2026. 

### Official description

During installation and importing the module, the code downloads and executes an infostealer.

---

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

Campaign: 2026-09-requests-cache-utils

Reasons (based on the campaign):

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

 - Downloads and executes a remote executable.

 - malware

 - infostealer

 - exfiltration-browser-data

## What should I do about MAL-2026-17191?

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-2026-17191 is a malicious package: requests-cache-utils (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-2026-17191/ (Markdown: https://insights.sbomify.com/MAL-2026-17191/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-17191

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-17191/
Summaries are generated and may contain mistakes; the official description above is the record.