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CVE-2026-59822

8.2 · HIGH

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format.

Published Jul 8, 2026CWE-287EPSS 0.84%

Overview

CVE-2026-59822 is a high-severity vulnerability. It was published on July 8, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/BerriAI/litellm/commit/73869f0faf7d11ee21adcb5f91b8c33a340b6c2cGitHubgithub.com/BerriAI/litellm/pull/26463GitHubgithub.com/BerriAI/litellm/releases/tag/v1.84.0GitHubgithub.com/BerriAI/litellm/security/advisories/GHSA-7488-6r32-c95qRefwww.wiz.io/blog/ai-infrastructure-honeypot

How CyberStrike helps

Frequently asked questions

What is CVE-2026-59822?

CVE-2026-59822 is a high-severity vulnerability. It was published on July 8, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-59822?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-59822?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-59822?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-59822 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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