SQL Injection via Authorization Header in LiteLLM Proxy (v1.81.16-1.83.6)
CVE-2026-42208 Published on May 8, 2026
LiteLLM: SQL injection in Proxy API key verification
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.
Known Exploited Vulnerability
This BerriAI LiteLLM SQL Injection Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. BerriAI LiteLLM contains a SQL injection vulnerability that allows an attacker to read data from the proxy's database and potentially modify it, leading to unauthorised access to the proxy and the credentials it manages.
The following remediation steps are recommended / required by May 11, 2026: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Weakness Type
What is a SQL Injection Vulnerability?
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.
CVE-2026-42208 has been classified to as a SQL Injection vulnerability or weakness.