CVE-2026-54302
Medium
Description
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.
SeverityMedium
CVSS5.4
Exploit probability—
Product
N8n
PublishedJun 23, 2026
First seenJun 23, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- n8n n8n1.123.55, 2.25.7, 2.26.2 or later
- n8n1.123.55, 2.26.2, 2.25.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| n8n n8n | v < 1.123.55, 2.0.0 ≤ v < 2.25.7, 2.26.0 ≤ v < 2.26.2 | 1.123.55, 2.25.7, 2.26.2 |
| n8nnpm | v < 1.123.55, 2.26.0 ≤ v < 2.26.2, 2.0.0-rc.0 ≤ v < 2.25.7 | 1.123.55, 2.26.2, 2.25.7 |
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