CRITICAL 9.2 NVD
CVE-2026-85660
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. A
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.
References
- https://github.com/MladenSU/cli-mcp-server
- https://github.com/MladenSU/cli-mcp-server/blob/main/src/cli_mcp_server/server.py
- https://github.com/MladenSU/cli-mcp-server/issues/17
- https://www.vulncheck.com/advisories/cli-mcp-server-0.2.5-command-allowlist-bypass-via-she
This critical severity vulnerability with a CVSS score of 9.2 was published on 2026-09-04 via NVD.
Risk Timeline
CVE Disclosed2026-09-04 · -1 days ago
Remediation Resources
vulnfeed aggregates 8217 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.