What does the telnyx malware do?

The OpenSSF Package Analysis project identified 'telnyx' @ 4.87.2 (pypi) as malicious. It is considered malicious because: - The package executes one or more commands associated with malicious behavior.

Which versions of telnyx are malicious?

The following PyPI versions of telnyx are flagged malicious: 4.87.1, 4.87.2. Treat any of these as compromised.

How do I remediate telnyx if I installed it?

Remove telnyx 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 telnyx — how do I know if it already compromised me?

If telnyx 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.

How do I find telnyx across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for telnyx (2 malicious versions).

Malicious package

telnyxPyPI

Advisory published Mar 27, 2026Updated Mar 27, 2026

telnyx is a confirmed malicious PyPI package (MAL-2026-2254) that executes malicious code on install (malicious versions 4.87.1, 4.87.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in telnyx (PyPI)

MAL-2026-2254

Immediate action

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

pip uninstall telnyx

What this malware does

The OpenSSF Package Analysis project identified 'telnyx' @ 4.87.2 (pypi) as malicious.

It is considered malicious because:

The package executes one or more commands associated with malicious behavior.

Malicious versions

2 flagged

4.87.14.87.2

Indicators of compromise (SHA-256)

64fdec8c3d81e855431dd89a2eb1008654d9d4ba0e01293166234b3609efe00a

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for telnyx (2 malicious versions).
If you installed it — respond
Remove telnyx 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 telnyx 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. telnyx on PyPI has been identified as a malicious package (versions 4.87.1, 4.87.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Credits

OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks telnyx-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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