VulnCheck KEV: CVE-2026-40217

LiteLLM through 2026-04-08 allows remote attackers to execute arbitrary code via bytecode rewriting at the /guardrails/testcustomcode URI...

PYSEC-2026-2601 LiteLLM has a sandbox escape in custom-code guardrail

Impact The POST /guardrails/testcustomcode endpoint runs user-supplied Python inside a hand-rolled sandbox. The sandbox can be escaped using bytecode-level techniques, allowing arbitrary code execution in the proxy process — which runs as root in the default Docker image. Reaching the endpoint...

Arbitrary Code Injection

Overview litellm is a Library to easily interface with LLM API providers Affected versions of this package are vulnerable to Arbitrary Code Injection in the /guardrails/testcustomcode endpoint through bytecode rewriting. An attacker can execute arbitrary code by sending specially crafted requests...