Kurz gesagt
- CVE-2025-49595 ist eine Schwachstelle (MITTEL (CVSS 4.9)) in n8n (n8n), n8n.
- Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 0.47%, höher als bei 40.9% aller Schwachstellen.
- Abhilfe: auf 1.99.0 oder neuer aktualisieren.
| Package | Affected versions | Patched versions |
|---|
| n8n | < 1.99.0
| 1.99.0
|
| n8n npm | < 1.99.0
| 1.99.0
|
Description
Summary
Denial of Service vulnerability in /rest/binary-data endpoint when processing empty filesystem URIs (filesystem:// or filesystem-v2://).
Impact
This is a Denial of Service (DoS) vulnerability that allows authenticated attackers to cause service unavailability through malformed filesystem URI requests. The vulnerability affects:
- The
/rest/binary-data endpoint
- 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.
Patches
The issue has been patched in 1.99.0.
All users should upgrade to this version or later.
The fix introduces strict checking of URI patterns.
Patch commit: https://github.com/n8n-io/n8n/pull/16229
NVD 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.
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