MAL-2026-2949 Malicious code in pathjoin (PyPI)
Malicious package
Published
MAL-2026-2949 is a malicious package: pathjoin (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-2026-2949/ (Markdown: https://insights.sbomify.com/MAL-2026-2949/index.md)
- Package
- pathjoin
- Registry
- PyPI
What is MAL-2026-2949?
MAL-2026-2949 is a malicious package in pathjoin, published on 20 Apr 2026.
Official description
During import, the code downloads and executes encrypted payload from remote location. During analysis, remote code was prepared to download the next stage executable. This is likely selectively delivered to victims as the code polls the C2 server periodically with the local hostname and awaits the next stage to download.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-04-pathjoin
Reasons (based on the campaign):
obfuscation
Downloads and executes a remote malicious script.
What should I do about MAL-2026-2949?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.