n8n versions before 1.123.64, 2.29.8, and 2.30.1 contain a credential exposure vulnerability: when configured with a Google Service Account key, the full PEM private key was mistakenly placed in the JWT header's kid field (intended only for a key identifier). Because JWT headers are Base64-encoded rather than encrypted, the private key could be recovered by anything that logged or inspected the JWT. An attacker who obtained the key could impersonate the service account and access or modify any Google Cloud resource it was authorized to use. Only instances using Google Service Account credentials are affected.
Metrics
Affected Vendors & Products
References
History
Wed, 22 Jul 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Wed, 22 Jul 2026 11:45:00 +0000
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| Description | n8n versions before 1.123.64, 2.29.8, and 2.30.1 contain a credential exposure vulnerability: when configured with a Google Service Account key, the full PEM private key was mistakenly placed in the JWT header's kid field (intended only for a key identifier). Because JWT headers are Base64-encoded rather than encrypted, the private key could be recovered by anything that logged or inspected the JWT. An attacker who obtained the key could impersonate the service account and access or modify any Google Cloud resource it was authorized to use. Only instances using Google Service Account credentials are affected. | |
| Title | n8n before 1.123.64 Credential Exposure via JWT Header | |
| First Time appeared |
N8n
N8n n8n |
|
| Weaknesses | CWE-312 | |
| CPEs | cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:* | |
| Vendors & Products |
N8n
N8n n8n |
|
| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-07-22T18:24:11.284Z
Reserved: 2026-07-22T10:48:36.000Z
Link: CVE-2026-65599
Updated: 2026-07-22T18:20:17.968Z
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OpenCVE Enrichment
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