CVE-2026-12773
EUVD-2026-3813921.06.2026, 04:16
A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/_experimental/mcp_server/auth/user_api_key_auth_mcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| litellm | litellm | 𝑥 < 1.59.9 |
𝑥
= Vulnerable software versions
Common Weakness Enumeration
- CWE-287 - Improper AuthenticationWhen an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.
- CWE-303 - Incorrect Implementation of Authentication AlgorithmThe requirements for the software dictate the use of an established authentication algorithm, but the implementation of the algorithm is incorrect.
References