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Malicious package

xforpyPyPI

Malicious code in xforpy (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2026-5332
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall xforpy

What this malware does

During import, the package starts a reverse shell

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

Campaign: 2026-06-anthropy

Reasons (based on the campaign):

  • The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.

Malicious versions

4 flagged
0.0.10.0.20.0.30.0.4

Indicators of compromise (SHA-256)

6ebd6a0497e01ef631a2c357263bd1af23d88e8d9a9ae46fe39110571949198c
7765ddca927dca186db905d036f1d6be42cf0f3eb05e58addb9e9cd666a3b9af

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for xforpy (4 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging xforpy across your stack and pipelines.

  2. If you installed it — respond

    xforpy 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.

  3. Did it already run?

    If xforpy was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks xforpy before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. xforpy on PyPI has been identified as a malicious package (versions 0.0.1, 0.0.2, 0.0.3, 0.0.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-06-anthropy

References

Credits

  • Kamil Mańkowski (kam193) · reporter

Detect & block this

O3 blocks xforpy-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

xforpy (PyPI) malicious package — MAL-2026-5332 | O3 Security