CVE-2026-58661

n8n before 2.28.0 (and before 1.123.58 on the 1.x branch) contains a disk space exhaustion vulnerability in the data-table file upload endpoint. The per-request quota check does not account for files already written to the shared temporary directory, allowing an authenticated user to repeatedly upload files that accumulate on disk until the periodic cleanup runs, potentially exhausting available disk space on the host.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/n8n-io/n8n/security/advisories/GHSA-w867-jm58-p9pv	Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/n8n-disk-space-exhaustion-via-data-table-file-upload-endpoint	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:n8n:n8n:::::community:node.js::
	cpe:2.3:a:n8n:n8n:::::enterprise:node.js::
	cpe:2.3:a:n8n:n8n:::::community:node.js::
	cpe:2.3:a:n8n:n8n:::::enterprise:node.js::

History

13 Jul 2026, 16:57

Type	Values Removed	Values Added
First Time		N8n N8n n8n
References	~~() https://github.com/n8n-io/n8n/security/advisories/GHSA-w867-jm58-p9pv -~~	() https://github.com/n8n-io/n8n/security/advisories/GHSA-w867-jm58-p9pv - Mitigation, Vendor Advisory
References	~~() https://www.vulncheck.com/advisories/n8n-disk-space-exhaustion-via-data-table-file-upload-endpoint -~~	() https://www.vulncheck.com/advisories/n8n-disk-space-exhaustion-via-data-table-file-upload-endpoint - Third Party Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 4.3
CPE		cpe:2.3:a:n8n:n8n:::::enterprise:node.js:: cpe:2.3:a:n8n:n8n:::::community:node.js::

10 Jul 2026, 15:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-10 15:16

Updated : 2026-07-13 16:57

NVD link : CVE-2026-58661

Mitre link : CVE-2026-58661

CVE.ORG link : CVE-2026-58661

JSON object : View

Products Affected

n8n

n8n

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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