GCVE-110-NCSC-2026-248

Advisory PublishedCVSS 9.0/10

Vulnetix · Advisory published July 17, 2026

A second-order expression injection vulnerability in n8n's Form nodes could allow unauthenticated attackers to inject and evaluate arbitrary expressions, potentially leading to remote code execution when combined with a sandbox escape, fixed in versions 2.10.1, 2.9.3, and 1.123.22.

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Weaknesses (CWE)

CWE-94Improper Control of Generation of Code ('Code Injection')CWE-497Exposure of Sensitive System Information to an Unauthorized Control SphereCWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)CWE-290Authentication Bypass by Spoofing

Risk Scores

CVSS 3.1

9.0/10

Critical · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected Products

Vendor	Product	Versions	Platforms
n8n	vers:unknown/*	—	—

Aliases

CVE-2026-27493 CVE-2026-27494 CVE-2026-27495 CVE-2026-27497 CVE-2026-27498 CVE-2026-27577 CVE-2026-27578 CVE-2026-56349 CVE-2026-56350 CVE-2026-56353 CVE-2026-56357 CVE-2026-56360

References

advisory

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