MAL-2026-903 Malicious code in requests-toolkit (PyPI)
Malicious package
Published
MAL-2026-903 is a malicious package: requests-toolkit (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-2026-903/ (Markdown: https://insights.sbomify.com/MAL-2026-903/index.md)
- Package
- requests-toolkit
- Registry
- PyPI
What is MAL-2026-903?
MAL-2026-903 is a malicious package in requests-toolkit, published on 15 Feb 2026.
Official description
During import, package masquerade and starts an embedded executable. The executable has signs of infostealer activity
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-02-requests-toolkit
Reasons (based on the campaign):
impersonation
infostealer
malware
The package contains code to detect if it is running in a sandbox environment.
keylogger
What should I do about MAL-2026-903?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.