# MAL-2026-3697: Malicious code in syntaxlogger (PyPI)


- **Type:** Malicious package
- **Package:** `syntaxlogger` (PyPI)
- **Published:** 13 May 2026

## What is MAL-2026-3697?

MAL-2026-3697 is a malicious package in syntaxlogger, published on 13 May 2026. 

### Official description

When using the provided functionality, code silently downloads archives with executables to a location excluded from A scanning, and then executes them. The remote content appears to be a legitimate application manipulated via DLL poisoning to perform malicious actions.

---

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

Campaign: 2026-05-syntaxlogger

Reasons (based on the campaign):

 - Downloads and executes a remote executable.

 - action-hidden-in-lib-usage

 - malware

## What should I do about MAL-2026-3697?

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-2026-3697 is a malicious package: syntaxlogger (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-2026-3697/ (Markdown: https://insights.sbomify.com/MAL-2026-3697/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-3697

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-3697/
Summaries are generated and may contain mistakes; the official description above is the record.