CVE-2026-49468 CRITICAL

CVE-2026-49468: LiteLLM: Authentication Bypass via Host Header Injection

Vendor Berriai
Product litellm
Weakness CWE-290
Published June 22, 2026
Last update June 30, 2026
View on NVD All CVEs

CVSS base score

9.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 22, 2026 CVE published
June 30, 2026 Record updated