Is CVE-2026-85660 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-85660?

CVE-2026-85660 has a CVSS v3 severity of HIGH (8.1).

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CVE-2026-85660

Description

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.