my-super-libPyPI
Advisory published Updated
my-super-lib is a confirmed malicious PyPI package (MAL-2026-1434) that steals credentials and exfiltrates sensitive data (malicious versions 0.3.0, 0.4.0, 0.6.0…). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in my-super-lib (PyPI)
What this malware does
During import, package decrypts and runs a malicious executable. The executable is hidden in an encoded and xored form in the JSON resource file.
This is a follow up of the campaign 2026-03-fastapi-middleware-cors
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-03-ariadne-federation
Reasons (based on the campaign):
-
malware
-
obfuscation
-
dependency-confusion
-
typosquatting
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for my-super-lib (4 malicious versions).
If you installed it — respond
my-super-lib is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If my-super-lib was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Kamil Mańkowski (kam193) · reporter
Detect & block this
O3 blocks my-super-lib-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.