MAL-2026-2403 Malicious code in polymarkets-sdk (PyPI)
Malicious package
Published
MAL-2026-2403 is a malicious package: polymarkets-sdk (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-2026-2403/ (Markdown: https://insights.sbomify.com/MAL-2026-2403/index.md)
- Package
- polymarkets-sdk
- Registry
- PyPI
What is MAL-2026-2403?
MAL-2026-2403 is a malicious package in polymarkets-sdk, published on 1 Apr 2026.
Official description
During import, the code attempts to exfiltrate to a hardcoded location sensitive data, including private SSH keys, cloud credentials and Windows SAM database.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-03-polymarkets-sdk
Reasons (based on the campaign):
exfiltration-credentials
files-exfiltration
exfiltration-cloud-tokens
What should I do about MAL-2026-2403?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.