CVE-2026-59821
High
Description
LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.82.0-stable, LiteLLM's Custom Code Guardrails production create and update paths did not apply the same sandboxing and validation used by the test endpoint, allowing a privileged user with access to create or update guardrails to submit custom Python code that executed in the LiteLLM proxy environment and could expose secrets available to the process. This issue is fixed in version 1.82.0-stable.
SeverityHigh
CVSS7.2
Exploit probability—
ProductLitellm
PublishedJul 8, 2026
First seenJul 8, 2026
Weakness typeCWE-94Code injection
How to fix
Update
- litellm litellm1.82.0 or later
- litellm1.82.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| litellm litellm | v < 1.82.0, 1.82.0 | 1.82.0 |
| litellmPyPI | v < 1.82.0 | 1.82.0 |
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