CVE-2026-77076
n8n before 1.123.69 Credential Leak via GraphQL Node Error
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
n8n versions before 1.123.69, 2.33.4, and 2.34.1 contain an information disclosure vulnerability in the GraphQL node. When a GraphQL request fails at the connection level, the node re-throws the underlying HTTP client error unchanged instead of wrapping it in n8n's standard error type. That error contains the live request's headers, including a decrypted credential secret, which the execution engine persists verbatim. Any authenticated user able to read the resulting execution can retrieve the decrypted credential secret from the stored run data.
| CWE | CWE-209 |
| Vendor | n8n-io |
| Product | n8n |
| Published | Aug 20, 2026 |
| Last Updated | Aug 20, 2026 |
Stay Ahead of the Next One
Get instant alerts for n8n-io n8n
Be the first to know when new unknown vulnerabilities affecting n8n-io n8n are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
n8n-io / n8n
0 < 1.123.69
n8n-io / n8n
0 < 2.34.1
n8n-io / n8n
0 < 2.33.4
References
Credits
🔍 Masofgon