MAL-2026-18119 Malicious code in ssemver (PyPI)
Malicious package
Published
MAL-2026-18119 is a malicious package: ssemver (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-2026-18119/ (Markdown: https://insights.sbomify.com/MAL-2026-18119/index.md)
- Package
- ssemver
- Registry
- PyPI
What is MAL-2026-18119?
MAL-2026-18119 is a malicious package in ssemver, published on 20 Oct 2026.
Official description
During installation, package downloads and executes malware.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-10-semvver
Reasons (based on the campaign):
Downloads and executes a remote executable.
malware
typosquatting
What should I do about MAL-2026-18119?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.