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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.

PUBLISHED Reserved 2026-04-25 | Published 2026-05-08 | Updated 2026-05-08 | Assigner GitHub_M




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Product status

>= 1.81.16, < 1.83.7
affected

References

github.com/...itellm/security/advisories/GHSA-r75f-5x8p-qvmc

github.com/BerriAI/litellm/releases/tag/v1.83.7-stable

cve.org (CVE-2026-42208)

nvd.nist.gov (CVE-2026-42208)

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