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.
References
| Link | Resource |
|---|---|
| https://github.com/BerriAI/litellm/commit/73869f0faf7d11ee21adcb5f91b8c33a340b6c2c | Patch |
| https://github.com/BerriAI/litellm/pull/26463 | Issue Tracking Patch |
| https://github.com/BerriAI/litellm/releases/tag/v1.84.0 | Product Release Notes |
| https://github.com/BerriAI/litellm/security/advisories/GHSA-7488-6r32-c95q | Mitigation Patch Vendor Advisory |
Configurations
History
13 Jul 2026, 13:32
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Litellm
Litellm litellm |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 8.2 |
| CPE | cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:* | |
| References | () https://github.com/BerriAI/litellm/commit/73869f0faf7d11ee21adcb5f91b8c33a340b6c2c - Patch | |
| References | () https://github.com/BerriAI/litellm/pull/26463 - Issue Tracking, Patch | |
| References | () https://github.com/BerriAI/litellm/releases/tag/v1.84.0 - Product, Release Notes | |
| References | () https://github.com/BerriAI/litellm/security/advisories/GHSA-7488-6r32-c95q - Mitigation, Patch, Vendor Advisory |
08 Jul 2026, 20:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-07-08 20:16
Updated : 2026-07-13 13:32
NVD link : CVE-2026-59822
Mitre link : CVE-2026-59822
CVE.ORG link : CVE-2026-59822
JSON object : View
Products Affected
litellm
- litellm