High 8.1Published Sep 4, 2026

CVE-2026-85660cli-mcp-server 0.2.5 Command Allowlist Bypass via Shell Substitution

Updated under an hour ago (2026-10-19 06:50 UTC)

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Every CVE for MladenSU cli-mcp-server

Exploited in the last 30 days

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: 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-78
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Sep 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

MladenSU cli-mcp-server mladensu:cli_mcp_server (from the name)	through 0.2.5	CNA record

References

https://github.com/MladenSU/cli-mcp-server/issues/17issue-tracking
https://github.com/MladenSU/cli-mcp-serverproduct
https://github.com/MladenSU/cli-mcp-server/blob/main/src/cli_mcp_server/server.pytechnical-description
https://www.vulncheck.com/advisories/cli-mcp-server-0.2.5-command-allowlist-bypass-via-shell-substitutionthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.