| Component | n8n |
| Severity | high (CVSS 7.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| Published (NVD) | 2026-05-04 |
| Last modified | 2026-06-17 |
| Affected versions | n8n < 1.123.33 n8n >= 2.17.0, < 2.17.5 |
| Fixed in | 1.123.33, 2.17.5 |
| Weakness | CWE-862 |
| CISA KEV | not listed |
NVD description
n8n is an open source workflow automation platform. Prior to versions 1.123.33 and 2.17.5, the dynamic-node-parameters endpoints did not verify whether the authenticated caller was authorized to use a supplied credential reference. An authenticated user with access to a shared workflow could supply a foreign credential ID in the request body, causing the backend to decrypt and use that credential in a helper execution path where the caller also controls the destination URL. This allowed the caller to force the backend to authenticate against attacker-controlled infrastructure using a credential belonging to another user, effectively exfiltrating a reusable API key. The issue is not limited to any single node type; any node that resolves credentials dynamically through these endpoints may be affected. This issue has been patched in versions 1.123.33, 2.17.5, and 2.18.0.
What to do
- Upgrade n8n to
1.123.33or later (or the patched release of your branch: 2.17.5). - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
Read more
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