MAL-2026-5878 Malicious code in cache-compat-utils (PyPI)
Malicious package
Published
MAL-2026-5878 is a malicious package: cache-compat-utils (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-2026-5878/ (Markdown: https://insights.sbomify.com/MAL-2026-5878/index.md)
- Package
- cache-compat-utils
- Registry
- PyPI
What is MAL-2026-5878?
MAL-2026-5878 is a malicious package in cache-compat-utils, published on 16 Jun 2026.
Official description
The package was found to contain malicious code or consuming dependency that contains malicious code
The package contains obfuscated JS code with an infostealer harvesting all kinds of credentials, as well as a worm capable of spreading the infection further.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-06-cache-compat-utils
Reasons (based on the campaign):
obfuscation
malware
infostealer
exfiltration-credentials
exfiltration-ssh-keys
exfiltration-cloud-tokens
What should I do about MAL-2026-5878?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.