What is CVE-2026-54311?

CVE-2026-54311 is a high-severity vulnerability in N8n, classified under CWE-488. CVSS score: 7.7/10. Published 2026-06-23.

How severe is CVE-2026-54311?

High severity. CVSS v3 base score is 7.7 out of 10.

Vulnerability in N8n

CVE-2026-54311

n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, an authenticated user with permission to create or modify workflows could pollute the sandbox used by the Merge node's SQL Query mode. Because the sandbox cont…

EPSS: 0.003 (23.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

Affected products

N8n
N8n-io N8n — versions >= 2.26.0, < 2.26.2, < 2.25.7

Weakness classification (CWE)

CWE-488

References

security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-54311?: CVE-2026-54311 is a high-severity vulnerability in N8n, classified under CWE-488. CVSS score: 7.7/10. Published 2026-06-23.
How severe is CVE-2026-54311?: High severity. CVSS v3 base score is 7.7 out of 10.