CVE-2026-49468

LiteLLM: Authentication Bypass via Host Header Injection

CVSS 9.5 CRITICALEPSS 0.5%CWE-290

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.5EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

22 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.84.0, This vulnerability is fixed in 1.84.0.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Affected products

Want to know if your infrastructure is exposed to this?

References