CVE-2026-42208
LiteLLM: SQL injection in Proxy API key verification
KEVCRITICAL 9.3EPSS 5.8%
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
- BerriAI · litellm
- CVSS v4.0 GITHUB
- 9.3 CRITICAL
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v4.0 GitHub
- 9.3 CRITICAL
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 - CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 5.77% chance of exploitation in the next 30 days, 93rd percentile
- CISA KEV
- added 2026-05-08
- Nuclei
- critical · CWE-89
- Published
- 2026-05-08
- Updated
- 2026-07-15
Proof-of-concept exploits (2)
- 0xBlackash/CVE-2026-422080★ · 2026-05-04
- HAERIN-L/poc_cve-2026-422080★ · 2026-05-30
Nuclei templates (1)
Metasploit modules (1)
Security advisories
- BerriAI/litellm/security/advisories/GHSA-r75f-5x8p-qvmc
- https://access.redhat.com/security/cve/CVE-2026-42208
- https://bugzilla.redhat.com/show_bug.cgi?id=2463965
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42208.json
- advisories/GHSA-r75f-5x8p-qvmc
- BerriAI/litellm/releases/tag/v1.83.7-stable