CVE-2026-56358
mediumn8n 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 Trigg…
Vendor / product: N8n — n8n
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
5.4 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-06-24 13:16
Modified: 2026-10-29 19:17
NVD status: Analyzed
Last synced 11 hours ago
Verified against the source API 2026-10-29 19:22 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
n8n / n8n <1.123.25, ≥2.0.0 <2.11.2
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/n8n-io/n8n/security/advisories/GHSA-q4fm-pjq6-m63g
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-q4fm-pjq6-m63g disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/n8n-stored-cross-site-scripting-in-form-trigger-node disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-29 19:22 UTC · record ↗