CVE-2026-42208 PoC — LiteLLM: SQL injection in Proxy API key verification

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-42208.yaml

Associated Vulnerability

Title:LiteLLM: SQL injection in Proxy API key verification (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.

Description

LiteLLM 1.81.16 to < 1.83.7 contains a SQL injection caused by improper handling of caller-supplied key in database query during proxy API key checks, letting unauthenticated attackers read and modify database data, exploit requires crafted Authorization header.

File Snapshot

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