CVE-2026-40217-PoC

CVE-2026-40217 — LiteLLM Guardrail Sandbox Escape LiteLLM POST /guardrails/testcustomcode — Sandbox Escape leading to Remote Code Execution RCE as root in default Docker deployment. Field| Value ---|--- CVE| CVE-2026-40217 CVSS| 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CWE| CWE-913...

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...

EUVD-2026-21376

LiteLLM has a sandbox escape in custom-code guardrail...

CVE-2026-40217

A flaw was found in LiteLLM. A remote attacker can exploit this flaw by performing bytecode rewriting at the /guardrails/testcustomcode URI. This could lead to arbitrary code execution, allowing the attacker to run malicious code on the affected system. Mitigation Mitigation for this issue is...

Duplicate Advisory: LiteLLM has a sandbox escape in custom-code guardrail

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-wxxx-gvqv-xp7p. This link is maintained to preserve external references. Original Description LiteLLM through 2026-04-08 allows remote attackers to execute arbitrary code via bytecode rewriting at the...

GHSA-3926-2JVF-FG29 Duplicate Advisory: LiteLLM has a sandbox escape in custom-code guardrail

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-wxxx-gvqv-xp7p. This link is maintained to preserve external references. Original Description LiteLLM through 2026-04-08 allows remote attackers to execute arbitrary code via bytecode rewriting at the...

CVE-2026-40217

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

CVE-2026-40217

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

CVE-2026-40217

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

CVE-2026-40217

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

CVE-2026-40217

CVE-2026-40217 affects LiteLLM up to 2026-04-08, where POST /guardrails/test_custom_code allows bytecode-level sandbox escape, enabling arbitrary code execution in the proxy process (runs as root in default Docker). The issue is confirmed by OSV PYSEC-2026-2601, which notes a sandbox escape in th...

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...

LiteLLM security vulnerabilities

LiteLLM is an open-source application developed by Berri AI. It allows for the invocation of all LLM APIs in the OpenAI format. Versions of LiteLLM dated before April 8, 2026, contain a security vulnerability. This vulnerability stems from the /guardrails/testcustomcode URI, which allows arbitrar...

CVE-2026-40217: Unprotected Alternate Channel

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

PT-2026-31920

Name of the Vulnerable Software and Affected Versions LiteLLM versions prior to 1.83.11 Description A flaw in the proxy server allows remote attackers to execute arbitrary code via bytecode rewriting. The issue exists because the POST /guardrails/test custom code endpoint runs user-supplied Pytho...