Medium 5.4Published Jun 24, 2026

CVE-2026-56358n8n - Stored Cross-Site Scripting in Form Trigger Node

Updated under an hour ago (Oct 26, 2026, 11:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for n8n

Exploited in the last 30 days

n8n before 1.123.25 (1.x) and before 2.11.2 (2.x), with the fix also included in 2.12.0, contains a stored cross-site scripting vulnerability in the Form Trigger node's CSS sanitization that allows authenticated users to inject malicious scripts. Attackers with workflow creation permissions can inject XSS payloads that execute persistently for all form visitors, enabling form hijacking and phishing attacks.

CVSS: 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Jun 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

n8n n8n n8n:n8n (from the name)	before 1.123.25; 1.123.25 not affected; from 2.0.0-rc.0 before 2.11.2; 2.11.2 not affected	CNA record
n8n n8n n8n:n8n	before 1.123.25; from 2.0.0 before 2.11.2	NVD

References

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-q4fm-pjq6-m63g	vendor-advisory, mitigation
https://www.vulncheck.com/advisories/n8n-stored-cross-site-scripting-in-form-trigger-node	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.