Which versions of py-json-formatter are malicious?

The following PyPI versions of py-json-formatter are flagged malicious: 0.0.1, 0.0.8. Treat any of these as compromised.

How do I remediate py-json-formatter if I installed it?

Remove py-json-formatter 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.

I already installed py-json-formatter — how do I know if it already compromised me?

If py-json-formatter 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.

Is py-json-formatter part of a known attack campaign?

Yes — py-json-formatter is associated with the RLMA-2024-04414, RLUA-2024-08847 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find py-json-formatter across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for py-json-formatter (2 malicious versions).

Malicious package

py-json-formatterPyPI

py-json-formatter is a confirmed malicious PyPI package (MAL-2024-5632) that executes malicious code on install (malicious versions 0.0.1, 0.0.8). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in py-json-formatter (PyPI)

MAL-2024-5632

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

pip uninstall py-json-formatter

Malicious versions

2 flagged

0.0.10.0.8

Indicators of compromise (SHA-256)

d91b0b6237d5bb34078743cb7622c98e683a13c04b354ffec7274cd176878702

6e42a42c6cc6ae3faafaec3c7d28f0fea169ce83eb469c18a67a3b294ee8cdb4

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for py-json-formatter (2 malicious versions).
If you installed it — respond
Remove py-json-formatter 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.
Did it already run?
If py-json-formatter 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. py-json-formatter on PyPI has been identified as a malicious package (versions 0.0.1, 0.0.8 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2024-04414RLUA-2024-08847

Credits

ReversingLabs · finder

Detect & block this

O3 blocks py-json-formatter-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.

Malware detection Runtime egress monitoring

Explore

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