CVE-2026-55608: n8n-mcp before 2.57.4 (exclusive), < 2.57.4

CVE-2026-55608. CVSS 3.1 base score 5.4 (MEDIUM, NVD). EPSS 0.0028 (percentile 0.19505), scored 24-Oct-2026.

Affected technology

n8n-mcp · before 2.57.4 (exclusive)
n8n-mcp

n8n-mcp · < 2.57.4
czlonkowski

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

Attack conditions (NVD, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 4.2/10) rates confidentiality and integrity impact as low; availability impact as none. NVD’s CVSS 3.1 assessment (base score 5.4/10) rates confidentiality and integrity impact as low; availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 25-Oct-2026 01:30 UTC

CWE: CWE-200, CWE-863
CCR priority: 21.7 /100 (P4)
CVSS 3.1: 5.4 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N · NVD
EPSS: 0.0028 · percentile 0.19505 · 2026-10-24
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-25 01:28:19.133527+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-55608.html