MAL-2026-17181 Malicious code in reqparser (PyPI)

Malicious package Published
Package
reqparser
Registry
PyPI

What is MAL-2026-17181?

MAL-2026-17181 is a malicious package in reqparser, published on 25 Sep 2026.

Official description

The package name 'reqparser' resembles common HTTP client / parsing library names in the Python ecosystem, a shape frequently used by typosquat lures. The tarball contains 3 files, and no concrete installer-harm behavior (credential read, environment scraping, network exfiltration, install-time fetch-and-execute, lifecycle-script exec) could be corroborated in this record. Automated deep tracing did not produce reviewable output for this artifact.

During the module import, the package starts an infostealer. It exfiltrates data from crypto currency wallets and web browsers, ensures persistence and installs further malware.


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

Campaign: 2026-09-reqparser

Reasons (based on the campaign):

  • malware

  • persistence

  • exfiltration-crypto

  • exfiltration-browser-data

  • The package contains code to detect if it is running in a sandbox environment.

  • infostealer

  • keylogger

What should I do about MAL-2026-17181?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

Sources

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