| Component | n8n |
| Severity | medium (CVSS 6.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| Published (NVD) | 2026-07-22 |
| Last modified | 2026-07-27 |
| Affected versions | n8n < 1.123.64 n8n < 1.123.64 n8n >= 2.0.0, < 2.29.8 n8n >= 2.0.0, < 2.29.8 n8n = 2.30.0 n8n = 2.30.0 |
| Fixed in | 1.123.64, 2.29.8 |
| Weakness | CWE-532 |
| CISA KEV | not listed |
NVD description
n8n versions before 1.123.64 fail to properly mask custom HTTP header credentials in LLM sub-node execution data, writing plaintext API keys and secrets to workflow execution records. Authenticated users with access to execution data can read exposed header values and credentials that persist in the database and can be exported.
What to do
- Upgrade n8n to
1.123.64or later (or the patched release of your branch: 2.29.8). - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-65589
- https://github.com/n8n-io/n8n/security/advisories/GHSA-89gh-3pgc-v5h2
- https://www.vulncheck.com/advisories/n8n-before-credential-exposure-via-llm-node-execution-data
Read more
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