CVE-2026-110847
CVE-2026-110847 · n8n before 1.123.83, 2.41.4, and 2.42.1 Stored XSS via Chat Trigger customCss Parameter
This page contains facts from public vulnerability sources. Check the original advisory before updating.
n8n before 1.123.83, 2.x before 2.41.4, and 2.42.x before 2.42.1 contains a stored cross-site scripting vulnerability in the Chat Trigger hosted-chat page, where insufficiently sanitised customCss values are interpolated into the page as markup. Workflow authors can publish a chat without n8n user authentication whose payload executes on the instance origin, acting on the sessions of signed-in visitors.
CVSS 7.0 · High · EPSS 0.4% · Fix available
- Published
- Updated
Affected products and versions
n8n
- Versions
- ≥ 0, < 1.123.83: Affected (semver)
- ≥ 2.0.0, < 2.41.4: Affected (semver)
- ≥ 2.42.0, < 2.42.1: Affected (semver)
Update to 1.123.83; Update to 2.41.4; Update to 2.42.1