CVE-2026-59819

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.83.10-stable, LiteLLM's /health/testconnection endpoint resolved request-supplied environment and OIDC file references in litellmparams, allowing a proxy administrator or another privileged caller with...

CVE-2026-59822

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.84.0, LiteLLM's MCP Streamable HTTP endpoint allowed an unauthenticated attacker to use a fabricated Authorization header to trigger an OAuth2 passthrough fallback path that replaced failed LiteLLM key...

CVE-2026-59819

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.83.10-stable, LiteLLM's /health/testconnection endpoint resolved request-supplied environment and OIDC file references in litellmparams, allowing a proxy administrator or another privileged caller with...

CVE-2026-59819 LiteLLM: Local file read via request-supplied OIDC file references

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.83.10-stable, LiteLLM's /health/testconnection endpoint resolved request-supplied environment and OIDC file references in litellmparams, allowing a proxy administrator or another privileged caller with...

CVE-2026-59819 LiteLLM: Local file read via request-supplied OIDC file references

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.83.10-stable, LiteLLM's /health/testconnection endpoint resolved request-supplied environment and OIDC file references in litellmparams, allowing a proxy administrator or another privileged caller with...

CVE-2026-59822 LiteLLM: MCP Authentication Bypass via OAuth2 Passthrough Fallback

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.84.0, LiteLLM's MCP Streamable HTTP endpoint allowed an unauthenticated attacker to use a fabricated Authorization header to trigger an OAuth2 passthrough fallback path that replaced failed LiteLLM key...

CVE-2026-59822 LiteLLM: MCP Authentication Bypass via OAuth2 Passthrough Fallback

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.84.0, LiteLLM's MCP Streamable HTTP endpoint allowed an unauthenticated attacker to use a fabricated Authorization header to trigger an OAuth2 passthrough fallback path that replaced failed LiteLLM key...

CVE-2026-59822

LiteLLM (an AI Gateway/proxy for LLM APIs) is vulnerable to an MCP authentication bypass prior to version 1.84.0 . The MCP Streamable HTTP endpoint's OAuth2 passthrough fallback path replaces a failed LiteLLM key validation with an empty UserAPIKeyAuth() object when a fabricated Authorization hea...

CVE-2026-59822 LiteLLM: MCP Authentication Bypass via OAuth2 Passthrough Fallback

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.84.0, LiteLLM's MCP Streamable HTTP endpoint allowed an unauthenticated attacker to use a fabricated Authorization header to trigger an OAuth2 passthrough fallback path that replaced failed LiteLLM key...

CVE-2026-59820

LiteLLM is a proxy AI gateway. A path traversal flaw existed in LiteLLM Skills archive extraction prior to version 1.83.7-stable, where uploaded skill ZIPs could write outside the intended extraction directory when an authenticated user accessed LLM API routes or held a key with /v1/skills, anthr...

CVE-2026-59821

CVE-2026-59821 affects LiteLLM , an AI Gateway proxy server for LLM APIs. The Custom Code Guardrails production create and update endpoints (POST /guardrails, PUT /guardrails/{guardrail_id}) failed to apply the same sandboxing and validation used by the test endpoint, allowing a privileged user t...

CVE-2026-59821

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 creat...

CVE-2026-59821 LiteLLM: Custom Code Guardrails production endpoints bypass code safety checks

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 creat...

CVE-2026-59821 LiteLLM: Custom Code Guardrails production endpoints bypass code safety checks

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 creat...

PT-2026-56542

Name of the Vulnerable Software and Affected Versions LiteLLM versions prior to 1.83.10-stable Description LiteLLM is a proxy server that functions as an AI Gateway for calling LLM APIs. The '/health/test connection' endpoint resolves request-supplied environment and OIDC file references within t...

CVE-2026-59820: Improper Limitation of a Pathname to a Restricted Directory

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.83.7-stable, LiteLLM Skills archive extraction did not sufficiently validate file paths from uploaded skill ZIP archives, allowing an authenticated user with access to LiteLLM LLM API routes or a key whos...

CVE-2026-59821: Improper Control of Generation of Code

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 creat...

CVE-2026-59822: Improper Authentication

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.84.0, LiteLLM's MCP Streamable HTTP endpoint allowed an unauthenticated attacker to use a fabricated Authorization header to trigger an OAuth2 passthrough fallback path that replaced failed LiteLLM key...

PT-2026-56544

Name of the Vulnerable Software and Affected Versions LiteLLM versions prior to 1.82.0-stable Description LiteLLM is a proxy server that acts as an AI Gateway for calling LLM APIs. A flaw exists in the production create and update paths of the Custom Code Guardrails, which failed to apply the sam...

CVE-2026-59819: External Control of File Name or Path

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.83.10-stable, LiteLLM's /health/testconnection endpoint resolved request-supplied environment and OIDC file references in litellmparams, allowing a proxy administrator or another privileged caller with...