# MAL-2026-3429: Malicious code in openai-spellchecker (PyPI)


- **Type:** Malicious package
- **Package:** `openai-spellchecker` (PyPI)
- **Published:** 11 May 2026

## What is MAL-2026-3429?

MAL-2026-3429 is a malicious package in openai-spellchecker, published on 11 May 2026. 

### Official description

The package hides code to download and execute a next-stage payload, which then communicates with C2 and listens for next code parts. In the analyzed version, the malicious code was not triggered.

---

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

Campaign: 2025-11-spellcheckers

Reasons (based on the campaign):

 - obfuscation

 - Downloads and executes a remote malicious script.

 - The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.

## What should I do about MAL-2026-3429?

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-2026-3429 is a malicious package: openai-spellchecker (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-2026-3429/ (Markdown: https://insights.sbomify.com/MAL-2026-3429/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-3429

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-3429/
Summaries are generated and may contain mistakes; the official description above is the record.