What’s Vulnerable › Vulnerabilities
CVE-2026-54302: n8n: Stored XSS in Chat Trigger Node
- Severity: medium (CVSS 5.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-23 · updated 2026-10-26
- Weakness: CWE-79
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.
Affected products
- n8n-io n8n: before 1.123.55; from 2.0.0 before 2.25.7; from 2.26.0 before 2.26.2 — fixed in 1.123.55, 2.25.7, 2.26.2
How to fix
Upgrade to a fixed version: n8n-io n8n 1.123.55, 2.25.7, 2.26.2. Check the vendor advisory for mitigations.
References
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