MAL-2025-191769 Malicious code in jsonschemex (PyPI)
Malicious package
Published
MAL-2025-191769 is a malicious package: jsonschemex (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-2025-191769/ (Markdown: https://insights.sbomify.com/MAL-2025-191769/index.md)
- Package
- jsonschemex
- Registry
- PyPI
What is MAL-2025-191769?
MAL-2025-191769 is a malicious package in jsonschemex, published on 24 Nov 2025.
Official description
Malicious clone of a legitimate package with hidden code that downloads the next stage scripts. Analysed payloads had just exfiltrated basic infos
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-11-jsonschemex
Reasons (based on the campaign):
exfiltration-generic
obfuscation
clones-real-package
Downloads and executes a remote malicious script.
What should I do about MAL-2025-191769?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.