reqparserPyPI
Advisory published Updated
reqparser is a confirmed malicious PyPI package (MAL-2026-17181) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 1.0.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in reqparser (PyPI)
What this malware does
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):
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malware
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persistence
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exfiltration-crypto
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exfiltration-browser-data
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The package contains code to detect if it is running in a sandbox environment.
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infostealer
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keylogger
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for reqparser (2 malicious versions).
If you installed it — respond
reqparser 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 reqparser 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
- Amazon Inspector · finder
- Kamil Mańkowski (kam193) · reporter
Detect & block this
O3 blocks reqparser-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.