Resource exhaustion in n8n - #VU135222
Published: June 25, 2026
Vulnerability identifier: #VU135222
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: n8n
Affected software:
n8n
n8n
Detailed vulnerability description
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper resource management in the data-table upload endpoint when handling repeated file uploads. A remote user can repeatedly upload files to exhaust temporary disk storage and cause a denial of service.
Files can accumulate in a shared temporary directory until periodic cleanup runs.
Remediation
Install security update from vendor's website.