CVE-2026-103252
n8n before 1.123.80, 2.39.6, and 2.40.1 Information Disclosure via Credential Test Endpoint
CVSS Score
7.7
EPSS Score
0.0%
EPSS Percentile
0th
n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain an authorization bypass vulnerability in the credential test endpoint that resolves project-scoped variables without validating caller access. Attackers can specify an arbitrary project ID in the request body to interpolate sensitive variables into credential test requests sent to attacker-controlled hosts for exfiltration.
| CWE | CWE-639 |
| Vendor | n8n-io |
| Product | n8n |
| Published | Oct 1, 2026 |
Stay Ahead of the Next One
Get instant alerts for n8n-io n8n
Be the first to know when new high vulnerabilities affecting n8n-io n8n are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
n8n-io / n8n
0 < 1.123.80 2.0.0 < 2.39.6 2.40.0 < 2.40.1
References
Credits
🔍 Hemalv02