LiteLLM: SQL injection in Proxy API key verification
100Vexday Risk Score
Patch now. It under exploitation confirmed by CISA and has a working public exploit.
ssvc Actcvss 9.3epss 89%
from disclosure to weapon0 days
Published on NVDMay 8
1st PoCApr 28
metasploitApr 20
CISA KEVMay 8
exploitation probability
89%top 1% of all CVEs
observed exploitation
yesCISA + VulnCheck
9 public exploit(s)
Action required by CISAfederal deadline: 2026-05-11
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Researched and written with AI from the vendor advisory and public analysis, with the sources above. Always confirm the fixed version in the official advisory before acting.
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
BerriAI · litellmpublic PoCs found — 9
githubgithub.com/HAERIN-L/poc_cve-2026-42208★ 0githubgithub.com/Zeltoc/threat-intel-brief-cve-2026-42208-litellm★ 0githubgithub.com/rootdirective-sec/CVE-2026-42208-Lab★ 0githubgithub.com/yendpoint/CVE-2026-42208-LAB★ 0githubgithub.com/ridhinva/litellm-sqli-scanner★ 0vulncheckvulncheck.com/xdb/0ab6c17887c6unverifiedvulncheckvulncheck.com/xdb/9e4a1708ec20unverifiedvulncheckvulncheck.com/xdb/efdf417c509funverifiedvulncheckvulncheck.com/xdb/3eb42672ca96unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://access.redhat.com/security/cve/CVE-2026-42208https://bugzilla.redhat.com/show_bug.cgi?id=2463965https://github.com/BerriAI/litellm/releases/tag/v1.83.7-stablehttps://github.com/BerriAI/litellm/security/advisories/GHSA-r75f-5x8p-qvmchttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42208.jsonhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-42208