CVE-2025-49595

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.

Reserved 2025-06-06 | Published 2025-07-03 | Updated 2025-07-03 | Assigner GitHub_M

Problem types

CWE-400: Uncontrolled Resource Consumption

Product status

< 1.99.0
affected

References

github.com/...io/n8n/security/advisories/GHSA-pr9r-gxgp-9rm8

github.com/n8n-io/n8n/pull/16229

github.com/...ommit/43c52a8b4f844e91b02e3cc9df92826a2d7b6052

cve.org (CVE-2025-49595)

nvd.nist.gov (CVE-2025-49595)

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