SB2026052936 - Authentication Bypass in LiteLLM
Published: May 29, 2026
Security Bulletin ID
SB2026052936
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Authentication Bypass by Spoofing (CVE-ID: N/A)
CWE-ID: CWE-290 - Authentication Bypass by Spoofing
CVSSv4: 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
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.
Remediation
Install update from vendor's website.