What is CVE-2026-3484?

CVE-2026-3484 is a medium-severity vulnerability in Phialsbasement Mcp Nmap Server, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-03-03.

How severe is CVE-2026-3484?

Medium severity. CVSS v3 base score is 6.3 out of 10.

RCE in Phialsbasement Mcp Nmap Server

CVE-2026-3484

A vulnerability was detected in PhialsBasement nmap-mcp-server up to bee6d23547d57ae02460022f7c78ac0893092e38. Affected by this issue is the function child_process.exec of the file src/index.ts of the component Nmap CLI Command Handler. The manipulation results in command injection. The attack may be performed from remote. This product utilizes a rolling release system for continuous delivery, and as such, version information for affected or updated releases is not disclosed. The patch is identified as 30a6b9e1c7fa6146f51e28d6ab83a2568d9a3488. It is best practice to apply a patch to resolve this issue.

Published 2026-03-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.045 (91.2th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.028 · newest: 0.045 · change: +0.017

Affected products

Phialsbasement Mcp Nmap Server
Phialsbasement Nmap-Mcp-Server — versions bee6d23547d57ae02460022f7c78ac0893092e38

Weakness classification (CWE)

References

vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
github.com/PhialsBasement/nmap-mcp-server/issues/7 (issue-tracking, Exploit, Issue Tracking)
github.com/PhialsBasement/nmap-mcp-server/issues/7 (issue-tracking, Exploit, Issue Tracking)
github.com/PhialsBasement/nmap-mcp-server/commit/30a6b9e1c7fa6146f51e28d6ab83a2… (Patch, patch)
github.com/PhialsBasement/nmap-mcp-server/ (Product, product)

Frequently asked questions

What is CVE-2026-3484?: CVE-2026-3484 is a medium-severity vulnerability in Phialsbasement Mcp Nmap Server, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-03-03.
How severe is CVE-2026-3484?: Medium severity. CVSS v3 base score is 6.3 out of 10.