CVE-2026-117570 (CVSS 5.2)

Description

Vorota-ai nmap-mcp through commit 3636afa contains an improper allowlist validation vulnerability in the scan_vulnerabilities tool that lets callers run blocked NSE script categories. MCP clients or prompt-injected agents can pass categories like exploit, dos, brute, or intrusive to nmap --script, running intrusive, brute-force, exploit, or denial-of-service scripts against scan targets.

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CVSS v3.1 Score

5.2

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L

EPSS — Exploit Prediction

0.0024

Probability of exploitation

0.16%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-183 CWE-183

References

Other References

https://github.com/Vorota-ai/nmap-mcp https://github.com/Vorota-ai/nmap-mcp/blob/3636afa6ad4e159c7ad07ca35ede644f37db9c5e/nmap_mcp/server.py#L440-L446 https://github.com/Vorota-ai/nmap-mcp/issues/3 https://www.vulncheck.com/advisories/nmap-mcp-through-commit-3636afa-permissive-nse-script-allowlist-in-scan-vulnerabilities

Frequently Asked Questions

What is CVE-2026-117570? +

Vorota-ai nmap-mcp through commit 3636afa contains an improper allowlist validation vulnerability in the scan_vulnerabilities tool that lets callers run blocked NSE script categories. MCP clients or prompt-injected agents can pass categories like exploit, dos, brute, or intrusive to nmap --script, running intrusive, brute-force, exploit, or denial-of-service scripts against scan targets. It has a CVSS v3.1 base score of 5.2 (MEDIUM).

How severe is CVE-2026-117570? +

CVE-2026-117570 has a CVSS v3.1 score of 5.2 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0024, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-117570? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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