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VULNERABILITIES

CVE-2026-77076 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/n8n-io/n8n/security/advisories/GHSA-9fqj-7wc5-cwhx [email protected]MitigationVendor Advisory
https://www.vulncheck.com/advisories/n8n-before-credential-leak-via-graphql-node-error [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-209Generation of Error Message Containing Sensitive Information[email protected]

Affected Products

ProductVersions
n8n n8n
< 1.123.69
>= 2.33.0, < 2.33.4
2.34.0

CPE

  • cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*
  • cpe:2.3:a:n8n:n8n:2.34.0:*:*:*:*:node.js:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-77076
NVD Published Date:
Aug 20, 2026
NVD Last Modified:
Sep 1, 2026
Source:
[email protected]
CVE-2026-77076 Details - Not Deferred