CVE-2026-110849
n8n before 1.123.83, 2.41.4, and 2.42.1 contains a stored cross-site scripting vulnerability in the file-preview modal, which re-publishes binary data as an unsandboxed same-origin blob URL. A member who uploads a crafted item can run script in the n8n origin of whoever previews it, typically the owner, and act with their session.
- Score
- CVSS 4.0 7.2 High
- Status
- Deferred - disclosure@vulncheck.com
- Published
- 2026-10-14
- Last modified
- 2026-10-15
- Weaknesses
- CWE-79
Affected products
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-29xw-66fq-4xc3
- https://www.vulncheck.com/advisories/n8n-before-1.123.83-2.41.4-and-2.42.1-stored-xss-via-binary-data-file-preview
