Описание
n8n Vulnerable to Denial of Service via Malformed Binary Data Requests
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-dataendpoint - 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
Пакеты
n8n
< 1.99.0
1.99.0
Связанные уязвимости
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.