CVE-2026-85660: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in MladenSU cli-mcp-server
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.
CVE-2026-85660: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in MladenSU cli-mcp-server
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 v4.0
Score 9.2critical
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-04T13:32:27.594Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a9adb43acd9273b49bef54b
Added to database: 09/04/2026, 14:52:51 UTC
Last updated: 09/04/2026, 23:29:00 UTC
Views: 9
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