A security vulnerability has been disclosed in LiteLLM: CVE-2026-40217, a sandbox escape in the custom-code guardrail...
A security vulnerability has been disclosed in LiteLLM: CVE-2026-40217, a sandbox escape in the custom-code guardrail feature (OSV advisory). This allows an attacker to escape the sandbox and potentially execute arbitrary code, undermining the trust in LiteLLM's security guarantees for model access control. The advisory, published on 2026-05-11, is corroborated by the absence of a fixed version in the subsequent rapid PyPI releases (1.84.5 through 1.89.0rc1 as of early June 2026), suggesting the patch may still be pending. This security risk could lead to user churn, especially among enterprise customers relying on LiteLLM for secure multi-model access.
signal brief
A security vulnerability has been disclosed in LiteLLM: CVE-2026-40217, a sandbox escape in the custom-code guardrail feature (OSV advisory). This allows an attacker to escape the sandbox and potentially execute arbitrary code, undermining the trust in LiteLLM's security guarantees for model access control. The advisory, published on 2026-05-11, is corroborated by the absence of a fixed version in the subsequent rapid PyPI releases (1.84.5 through 1.89.0rc1 as of early June 2026), suggesting the patch may still be pending. This security risk could lead to user churn, especially among enterprise customers relying on LiteLLM for secure multi-model access.
evidence
Decision support, not stock advice. This signal is research with cited evidence — not a recommendation to buy, sell, or hold any security.