NIST deprecates RSA-2048 from 2030. Find every one of them before attackers do.
Malicious package

peloton-client123PyPI

Advisory published Updated

peloton-client123 is a confirmed malicious PyPI package (MAL-2025-41715) that executes malicious code on install (malicious version 0.8.10). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in peloton-client123 (PyPI)

MAL-2025-41715
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall peloton-client123

Malicious versions

1 flagged
0.8.10

Indicators of compromise (SHA-256)

e04f5bb9780de3541f853306bdcf9525bc99ed129b897a2a1885948d378df8c4
81d74cb5da7853f0b92c653b800931877636226b4694b80749b5d09be3355baa
a867655d9add48741b0a1d6be200e081bc75532642358f653fd927907e81f6fc

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for peloton-client123 (version 0.8.10).

  2. If you installed it — respond

    Remove peloton-client123 from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If peloton-client123 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

No. peloton-client123 on PyPI has been identified as a malicious package (version 0.8.10 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-04210RLUA-2025-04799RLUA-2025-05624

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks peloton-client123-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Explore

peloton-client123 (PyPI) malicious package — MAL-2025-41715 | O3 Security