n8n is a workflow automation platform. Prior to version 1.99.0, there is a denial of Service vulnerability in /rest/binary-data endpoint when processing empty filesystem URIs (filesystem:// or filesystem-v2://). This allows authenticated attackers to cause service unavailability through malformed filesystem URI requests, effecting the /rest/binary-data endpoint and n8n.cloud instances (confirmed HTTP/2 524 timeout responses). Attackers can exploit this by sending GET requests with empty filesystem URIs (filesystem:// or filesystem-v2://) to the /rest/binary-data endpoint, causing resource exhaustion and service disruption. This issue has been patched in version 1.99.0.
Advisories
Source ID Title
EUVD EUVD EUVD-2025-19862 n8n Vulnerable to Denial of Service via Malformed Binary Data Requests
Github GHSA Github GHSA GHSA-pr9r-gxgp-9rm8 n8n Vulnerable to Denial of Service via Malformed Binary Data Requests
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 04 Sep 2025 18:00:00 +0000

Type Values Removed Values Added
First Time appeared N8n
N8n n8n
CPEs cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*
Vendors & Products N8n
N8n n8n

Thu, 03 Jul 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 03 Jul 2025 12:45:00 +0000

Type Values Removed Values Added
Description n8n is a workflow automation platform. Prior to version 1.99.0, there is a denial of Service vulnerability in /rest/binary-data endpoint when processing empty filesystem URIs (filesystem:// or filesystem-v2://). This allows authenticated attackers to cause service unavailability through malformed filesystem URI requests, effecting the /rest/binary-data endpoint and n8n.cloud instances (confirmed HTTP/2 524 timeout responses). Attackers can exploit this by sending GET requests with empty filesystem URIs (filesystem:// or filesystem-v2://) to the /rest/binary-data endpoint, causing resource exhaustion and service disruption. This issue has been patched in version 1.99.0.
Title n8n Vulnerable to Denial of Service via Malformed Binary Data Requests
Weaknesses CWE-400
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-07-03T13:14:59.815Z

Reserved: 2025-06-06T15:44:21.557Z

Link: CVE-2025-49595

cve-icon Vulnrichment

Updated: 2025-07-03T13:13:37.482Z

cve-icon NVD

Status : Analyzed

Published: 2025-07-03T13:15:28.690

Modified: 2025-09-04T16:49:06.910

Link: CVE-2025-49595

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.