| Component | n8n |
| Severity | medium (CVSS 5.3) |
| CVSS vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
| Published (NVD) | 2026-07-13 |
| Last modified | 2026-07-15 |
| Affected versions | <= 0.11.0 read from the advisory text: NVD has not published CPE data yet |
| Fixed in | see the vendor advisory |
| Weakness | CWE-22 |
| CISA KEV | not listed |
NVD description
A vulnerability was identified in makafeli n8n-workflow-builder up to 0.11.0. Affected is an unknown function of the file build/server.cjs of the component update_node_from_file. The manipulation of the argument filePath leads to path traversal. An attack has to be approached locally. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.
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-2026-15521
- https://github.com/makafeli/n8n-workflow-builder/
- https://github.com/makafeli/n8n-workflow-builder/issues/28
- https://vuldb.com/cve/CVE-2026-15521
- https://vuldb.com/submit/854522
- https://vuldb.com/vuln/377850
- https://vuldb.com/vuln/377850/cti
Read more
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