External Control of File Name or Path

Overview litellm is a Library to easily interface with LLM API providers Affected versions of this package are vulnerable to External Control of File Name or Path via request-supplied OIDC file references through the /health/testconnection handler in litellm/proxy/healthendpoints/healthendpoints....

Authentication Bypass Using an Alternate Path or Channel

Overview litellm is a Library to easily interface with LLM API providers Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel via the OAuth2 passthrough fallback in MCPRequestHandler.processmcprequest in...

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-2026-59821

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-2026-59822

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: 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 (proxy server for LLM APIs)Prior to 1.84.0, LiteLLM’s MCP Streamable HTTP endpoint was vulnerable to an unauthenticated exploit where a fabricated Authorization header triggered an OAuth2 passthrough fallback. This path replaced failed LiteLLM key validation with an empty UserAPIKeyAuth()...

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

LiteLLM is a proxy/AI Gateway for LLM API calls. A vulnerability exists in production create/update paths of Custom Code Guardrails before version 1.82.0-stable, where sandboxing/validation was not applied consistently with the test endpoint, allowing a privileged user to submit custom Python cod...

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...

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...

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...

PYSEC-2026-1546 LiteLLM Has an Improper Authorization Vulnerability

An improper authorization vulnerability exists in the main-latest version of BerriAI/litellm. When a user with the role 'internaluserviewer' logs into the application, they are provided with an overly privileged API key. This key can be used to access all the admin functionality of the applicatio...

PYSEC-2026-1543 LiteLLM Has a Leakage of Langfuse API Keys

In berriai/litellm version v1.52.1, an issue in proxyserver.py causes the leakage of Langfuse API keys when an error occurs while parsing team settings. This vulnerability exposes sensitive information, including langfusesecret and langfusepublickey, which can provide full access to the Langfuse...

PYSEC-2026-1545 LiteLLM Vulnerable to Denial of Service (DoS) via Crafted HTTP Request

A Denial of Service DoS vulnerability exists in berriai/litellm version v1.44.5. This vulnerability can be exploited by appending characters, such as dashes -, to the end of a multipart boundary in an HTTP request. The server continuously processes each character, leading to excessive resource...

PYSEC-2026-1548 LiteLLM Reveals Portion of API Key via a Logging File

In berriai/litellm before version 1.44.12, the litellm/litellmcoreutils/litellmlogging.py file contains a vulnerability where the API key masking code only masks the first 5 characters of the key. This results in the leakage of almost the entire API key in the logs, exposing a significant amount ...