Telnyx Python SDK: Supply Chain Security Notice
Unauthorized versions of the Telnyx Python SDK were briefly published to PyPI as part of a broader supply chain attack. Learn which versions were affected, who is impacted, and the steps to secure your environment.
On March 27, 2026 at 03:51:28 UTC, two unauthorized versions of the Telnyx Python SDK were published to PyPI: versions 4.87.1 and 4.87.2. Both versions contained malicious code. Both were quarantined by 10:13 UTC the same day.
This incident is part of a broader supply chain campaign that has also affected Trivy, Checkmarx, and LiteLLM.
The Telnyx platform, APIs, and infrastructure were not compromised. This incident was limited to the PyPI distribution channel for the Python SDK.
Both versions have been removed from PyPI.
If the version shown is 4.87.1 or 4.87.2, treat the environment as compromised.