CVE-2026-126385
n8n before 2.46.1 OAuth Account Hijack via Unauthenticated Credential Callback
CVSS Score
7.7
EPSS Score
0.0%
EPSS Percentile
0th
n8n before 2.45.5, 2.46.x before 2.46.1, and 3.x before 3.0.1 contains a flaw in the OAuth2 credential callback of the dynamic-credential connect flow, which does not verify that the completing browser belongs to the user who started the flow. Members with access to a resolvable OAuth2 credential can send the provider authorization URL to a victim; if the victim consents without an active n8n session, the victim's tokens are stored under the member's identity, letting the member's workflows act as the victim.
| CWE | CWE-306 |
| Vendor | n8n-io |
| Product | n8n |
| Published | Nov 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
n8n-io / n8n
2.46.0 < 2.46.1
n8n-io / n8n
0 < 2.45.5
n8n-io / n8n
3.0.0 < 3.0.1
References
Credits
🔍 sm1ee