- 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.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
- Products
- litellm
CVSS 4.0
- Type
- Secondary
- Base score
- 8.8
- Impact score
- -
- Exploitability score
- -
- Vector string
- 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
- Severity
- HIGH
CVSS 3.1
- Type
- Primary
- Base score
- 8.2
- Impact score
- 4.2
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- Severity
- HIGH
- security-advisories@github.com
- CWE-287
- Hype score
- Not currently trending
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"criteria": "cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:*",
"matchCriteriaId": "0432AF82-95FD-4358-9414-7B41889CEFD2",
"versionEndExcluding": "1.84.0",
"vulnerable": true
}
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"negate": false,
"operator": "OR"
}
]
}
]