CVE-2026-59822

BerriAI LiteLLM Improper Authentication Vulnerability

Litellm

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 validation with an empty UserAPIKeyAuth() object, allowing requests to reach MCP tooling without a valid LiteLLM key. This issue is fixed in version 1.84.0.

8. Jul 2026

Ausgewertete Quellen

• Hinweis
  https://www.wiz.io/blog/ai-infrastructure-honeypot
• CISA
  https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-59822
• CISA
  BerriAI LiteLLM Improper Authentication Vulnerability
• NVD
  CVE-2026-59822
• GitHub
  https://github.com/BerriAI/litellm/security/advisories/GHSA-7488-6r32-c95q