CVE Catalog

CVE-2026-85660

HighCVSS 8.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.62%

48th percentile - higher than 48% of all known CVEs

Summary

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.

Risk Assessment

The risk includes execution of unauthorized commands on the server, which can lead to system integrity compromise or takeover.

Recommendation

Disable ALLOW_SHELL_OPERATORS if not necessary, or implement safer command validation that blocks shell command substitution.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS