SB2026042115 - Multiple vulnerabilities in LiteLLM

Description

This security bulletin contains information about 3 vulnerabilities.

1) SQL injection (CVE-ID: CVE-2026-42208)

CWE-ID: CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber

The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to insufficient sanitization of user-supplied data in Proxy API key verification. A remote attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.

2) Improper Neutralization of Special Elements Used in a Template Engine (CVE-ID: CVE-2026-42203)

CWE-ID: CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to server-side template injection (SSTI) issue in /prompts/test endpoint. A remote user can execute arbitrary code on the system.

3) OS Command Injection (CVE-ID: CVE-2026-42271)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Green

The vulnerability allows a remote user to execute arbitrary commands on the host.

The vulnerability exists due to improper neutralization of special elements used in an os command in the MCP stdio test endpoints when processing a full server configuration for stdio transport. A remote user can submit a specially crafted request containing command, args, and env fields to execute arbitrary commands on the host.

The issue affects POST /mcp-rest/test/connection and POST /mcp-rest/test/tools/list, and the supplied command is spawned as a subprocess with the privileges of the proxy process.

Remediation

Install update from vendor's website.

References

• https://github.com/BerriAI/litellm/security/advisories/GHSA-r75f-5x8p-qvmc
• https://github.com/BerriAI/litellm/security/advisories/GHSA-xqmj-j6mv-4862
• https://github.com/BerriAI/litellm/security/advisories/GHSA-v4p8-mg3p-g94g