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Critical severity9.8CISA KEVNVD Advisory· Published May 8, 2026· Updated May 8, 2026

CVE-2026-42208

CVE-2026-42208

Description

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From version 1.81.16 to before version 1.83.7, a database query used during proxy API key checks mixed the caller-supplied key value into the query text instead of passing it as a separate parameter. An unauthenticated attacker could send a specially crafted Authorization header to any LLM API route (for example POST /chat/completions) and reach this query through the proxy's error-handling path. An attacker could read data from the proxy's database and may be able to modify it, leading to unauthorised access to the proxy and the credentials it manages. This issue has been patched in version 1.83.7.

Affected products

1
  • Litellm/Litellm
    cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:*
    Range: >=1.81.16,<1.83.7

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

5

News mentions

16