Main Vulnerability Database Vulnerabilities #VU132775

Authentication Bypass by Spoofing in LiteLLM - #VU132775

Published: May 29, 2026

Vulnerability identifier: #VU132775

CSH Severity: High

CVSS v4.0: 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/E:U/U:Amber

CVE-ID: N/A

CWE-ID: CWE-290

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: LiteLLM

Affected software:
LiteLLM

Detailed vulnerability description

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.

Install updates from vendor's website.