Information Exposure Through an Error Message in n8n - #VU140996
Published: August 5, 2026
Vulnerability identifier: #VU140996
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-209
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper handling of raw error data in the GraphQL node when processing failed connection-level requests. A remote user can read a stored execution containing the unwrapped HTTP client error to disclose sensitive information.
The persisted error data may include live request headers containing a decrypted credential secret.
Affected software
n8n
Remediation
Install security update from vendor's website.
n8n - addressed in versions 1.123.69, 2.33.4, 2.34.1