MAL-2026-1422 Malicious code in fastapi-middleware-cors (PyPI)

Library disguised as FastAPI helper is executing obfuscated code during importing the module. The code is highly obfuscated; the code seems to contain an installation beacon reporting to a Telegram channel.

The package name appears as a dependency in a few Github repositories created long before publishing it, suggesting it might be an attempt to hijack the name that was previously wrongly generated by AI.

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-03-fastapi-middleware-cors

Reasons (based on the campaign):

• typosquatting

• obfuscation

• exfiltration-generic