| Component | n8n |
| Severity | high (CVSS 8.8) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Published (NVD) | 2025-09-08 |
| Last modified | 2026-06-17 |
| Affected versions | n8n = 1.95.3 n8n = 1.100.1 n8n = 1.101.1 |
| Fixed in | see the vendor advisory |
| Weakness | CWE-434 |
| CISA KEV | not listed |
NVD description
An arbitrary file upload vulnerability in the Chat Trigger component of N8N v1.95.3, v1.100.1, and v1.101.1 allows attackers to execute arbitrary code via uploading a crafted HTML file.
What to do
- NVD lists no fixed version yet: follow the vendor advisory below and keep n8n off the public internet until a fix ships.
- Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2025-56265
- https://github.com/nikolas-ch/CVEs/tree/main/N8N/N8N_v1.100.1
- https://github.com/nikolas-ch/CVEs/tree/main/N8N/N8N_v1.100.1/ChatTrigger_StoredXSSviaUnrestrictedFileUpload
- https://github.com/nikolas-ch/CVEs/blob/main/N8N/N8N_v1.100.1/ChatTrigger_StoredXSSviaUnrestrictedFileUpload/StoredXSSviaUnristrictedFileUpload.txt
Read more
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