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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 9
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
N8n N8n
cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*
|
— |
1.123.64
|
|
N8n N8n
cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*
|
— |
2.30.1
|
|
N8n N8n
cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*
|
— |
2.29.8
|
|
N8n N8n
cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:*
|
— |
1.123.64
|
|
N8n N8n
cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*
|
— |
1.123.64
|
|
N8n N8n
cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:*
|
2.0.0
|
2.29.8
|
|
N8n N8n
cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*
|
2.0.0
|
2.29.8
|
|
N8n N8n
cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:community:node.js:*:*
|
— | — |
|
N8n N8n
cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:enterprise:node.js:*:*
|
— | — |