Llm-Assisted Incident Response Workflow And Routing

Issue 85 Edition 2026-03-26 4 min read

General

Sources: 1 • Confidence: High • Updated: 2026-04-13 03:54

Key takeaways

Callum McMahon reported the LiteLLM malware attack to PyPI.
Inspection of the litellm==1.82.8 wheel found a file named litellm_init.pth with size 34628 bytes.
The document predicts that installing or upgrading litellm while the malicious 1.82.8 release is live would infect the installing environment.
The beginning of litellm_init.pth includes code that spawns a Python subprocess to base64-decode and execute an embedded payload.
The document asserts that litellm==1.82.8 was live on PyPI at the time described.

Callum McMahon reported the LiteLLM malware attack to PyPI.
McMahon used Claude conversation transcripts to confirm the vulnerability and decide on response actions.
The document recommends reporting the incident immediately to security@pypi.org.
After confirming malicious code in an isolated Docker container, Claude suggested using the PyPI security contact address.
McMahon used the claude-code-transcripts tool to publish a transcript of the Claude conversation.

Inspection of the litellm==1.82.8 wheel found a file named litellm_init.pth with size 34628 bytes.
The beginning of litellm_init.pth includes code that spawns a Python subprocess to base64-decode and execute an embedded payload.
The document asserts that litellm==1.82.8 was live on PyPI at the time described.
A fresh download from PyPI was tested in an isolated Docker container to confirm the compromise.

The document predicts that installing or upgrading litellm while the malicious 1.82.8 release is live would infect the installing environment.

Was litellm==1.82.8 yanked or removed from PyPI, and if so, when?
What is the full behavior of the embedded payload (actions taken, network indicators, persistence, data access)?
Under what exact conditions does the .pth-based mechanism execute in typical installation and runtime scenarios for downstream users?
How many downstream environments installed or upgraded to the affected version during the exposure window, and what confirmed infections occurred?
What validation steps beyond the isolated Docker reproduction were performed (hashes, signature comparisons, diff against known-good releases, independent reproduction)?

If litellm 1.82.8 was live and executes via a .pth file during install, organizations may accelerate supply chain security spend on PyPI monitoring, artifact scanning, and incident response workflows involving LLMs.
If a popular Python package can ship a wheel with an executable .pth payload, security vendors and DevSecOps tools may see increased demand for detection rules targeting suspicious wheel artifacts and install time execution paths.

PyPI confirms whether litellm 1.82.8 was yanked or removed and provides timing, download counts, or maintainer actions that establish the exposure window.
Independent reproduction or verification publishes hashes, diffs versus known good releases, and confirms the litellm_init.pth contents and execution pathway described.
Analysis of the embedded payload documents behavior, network indicators, persistence, and any observed infections tied to installs or upgrades during the exposure window.

Evidence shows litellm 1.82.8 was not actually available on PyPI as described, or was removed before meaningful distribution occurred.
Independent analysis finds the .pth file does not execute in typical installation and runtime scenarios, or the embedded payload is nonfunctional or benign.
Verification fails to reproduce the described wheel contents or size and indicates the artifact was altered, misidentified, or not part of the published release.