Authentication Bypass by Spoofing in LiteLLM - CVE-2026-49468
Published: May 29, 2026
Vulnerability identifier: #VU132775
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-49468
CWE-ID: CWE-290
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to the host-header parsing flaw in the LiteLLM proxy. A remote attacker can gain access to protected management routes.
Affected software
LiteLLM
How to mitigate CVE-2026-49468
Install updates from vendor's website.
LiteLLM - update to 1.84.0