Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/MladenSU/cli-mcp-server
- https://github.com/MladenSU/cli-mcp-server/blob/main/src/cli_mcp_server/server.p
- https://github.com/MladenSU/cli-mcp-server/issues/17
- https://www.vulncheck.com/advisories/cli-mcp-server-0.2.5-command-allowlist-bypa
- https://github.com/MladenSU/cli-mcp-server/issues/17
FAQ
What is CVE-2026-85660?
CVE-2026-85660 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 substitut...
How severe is CVE-2026-85660?
CVE-2026-85660 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-85660?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.