HIGH 7.1 NVD
CVE-2026-77076
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 connec
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.
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-9fqj-7wc5-cwhx
- https://www.vulncheck.com/advisories/n8n-before-credential-leak-via-graphql-node-error
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-08-20 via NVD.
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