CVE-2026-59822

Açıklama (NVD)

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.

Yayın: 08.07.2026 · Son değişiklik: 25.10.2026 · Zayıflık: CWE-287, CWE-306

CVSS

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Referanslar

• https://github.com/BerriAI/litellm/commit/73869f0faf7d11ee21adcb5f91b8c33a340b6c2c
• https://github.com/BerriAI/litellm/pull/26463
• https://github.com/BerriAI/litellm/releases/tag/v1.84.0
• https://github.com/BerriAI/litellm/security/advisories/GHSA-7488-6r32-c95q
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-59822
• https://www.wiz.io/blog/ai-infrastructure-honeypot