TI-2026-39198 Aliases CVE-2026-54302 GHSA-42h7-m79w-wvg5

n8n: Stored XSS in Chat Trigger Node

LOW 30CWE-79Published 2026-06-23 · Updated 2026-06-23

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting
Confidentiality · integrity · availability: High · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

n8n is an open source workflow automation platform. Prior to 1.123.55, 2.25.7, and 2.26.2, an authenticated user with workflow edit access could inject arbitrary JavaScript into the Chat Trigger's generated page by setting a malicious webhookId. When a logged-in user visited the chat URL, the injected code executed in the n8n origin with that user's session privileges. This vulnerability is fixed in 1.123.55, 2.25.7, and 2.26.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00231 14th percentileScored 2026-11-07

Fix Fixed n8n (n8n-io): 1.123.55, 2.25.7, 2.26.2n8n (npm): 1.123.55, 2.26.2, 2.25.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
n8n	n8n	before 1.123.55; 2.0.0-rc.0 to before 2.25.7; 2.26.0 to before 2.26.2	1.123.55, 2.25.7, 2.26.2	Patch available	CNA
—	n8n (npm)	before 1.123.55	1.123.55	Patch available	GHSA-42h7-m79w-wvg5
—	n8n (npm)	2.26.0 to before 2.26.2	2.26.2	Patch available	GHSA-42h7-m79w-wvg5
—	n8n (npm)	2.0.0-rc.0 to before 2.25.7	2.25.7	Patch available	GHSA-42h7-m79w-wvg5

n8n Vendorn8n Affected before 1.123.55; 2.0.0-rc.0 to before 2.25.7; 2.26.0 to before 2.26.2 Fixed in 1.123.55, 2.25.7, 2.26.2 Patch available CNA
n8n (npm) Vendor— Affected before 1.123.55 Fixed in 1.123.55 Patch available GHSA-42h7-m79w-wvg5
n8n (npm) Vendor— Affected 2.26.0 to before 2.26.2 Fixed in 2.26.2 Patch available GHSA-42h7-m79w-wvg5
n8n (npm) Vendor— Affected 2.0.0-rc.0 to before 2.25.7 Fixed in 2.25.7 Patch available GHSA-42h7-m79w-wvg5

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:n8n:n8n::::::node.js::*	before 1.123.55; 2.0.0 to before 2.25.7; 2.26.0 to before 2.26.2	Vulnerable	n8n

cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:* Versions before 1.123.55; 2.0.0 to before 2.25.7; 2.26.0 to before 2.26.2 Vulnerable ·n8n

Remediation

Fix · CNA n8n (n8n-io) Fixed in 1.123.55, 2.25.7, 2.26.2
Fix · GHSA-42h7-m79w-wvg5 n8n (npm) Fixed in 1.123.55 Advisory →
Fix · GHSA-42h7-m79w-wvg5 n8n (npm) Fixed in 2.26.2 Advisory →
Fix · GHSA-42h7-m79w-wvg5 n8n (npm) Fixed in 2.25.7 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-54302
2026-10-03 Alias added: GHSA-42h7-m79w-wvg5

References

Advisory 2

Other 1

https://github.com/n8n-io/n8n

TI-2025-42131 n8n Vulnerable to Remote Code Execution via Expression Injection KEVCVSS 3.1CRITICAL 10.0
TI-2026-17560 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling CVSS 3.1CRITICAL 10.0
TI-2026-01167 Authenticated users can bypass the Expression sandbox mechanism to achieve full remote… CVSS 3.1CRITICAL 9.9
TI-2026-00644 Sandbox escape in n8n Python task runner allows for arbitrary code execution on the underlying host. CVSS 3.1CRITICAL 9.9
TI-2025-35293 An arbitrary file upload vulnerability in the Chat Trigger component of N8N v1.95.3… CVSS 3.1HIGH 8.8
TI-2023-12275 The n8n package 0.218.0 for Node.js allows Escalation of Privileges. CVSS 3.1HIGH 8.8

See all 178 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences