CVE-2026-42208: BerriAI LiteLLM SQL Injection Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2026-05-08. EPSS: 5.8% chance of exploitation in the next 30 days.

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

• LiteLLM LiteLLM: from 1.81.16, before 1.83.7 (fixed in 1.83.7)

Published 2026-05-08. Last modified 2026-07-15.