CVE-2026-85660: Mladensu CLI-Mcp-Server

High severity, CVSS 8.1. EPSS: 0.6% chance of exploitation in the next 30 days.

cli-mcp-server 0.2.5 contains a command allowlist bypass vulnerability in the _validate_command_with_operators function when ALLOW_SHELL_OPERATORS is enabled. Attackers can use shell command substitution syntax like $(...) or backticks to execute non-allowlisted commands that bypass the ALLOWED_COMMANDS validation check.

Affected products

• Mladensu CLI-Mcp-Server: up to and including 0.2.5

Published 2026-09-04. Last modified 2026-09-24.