CVE-2025-49595 – n8n

Package

Manager: npm
Name: n8n
Vulnerable Version: >=0 <1.99.0

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00049 pctl0.14873

Details

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-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](https://github.com/n8n-io/n8n/releases/tag/n8n%401.99.0). 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

Metadata

Created: 2025-07-03T14:06:01Z
Modified: 2025-07-03T16:20:44Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/07/GHSA-pr9r-gxgp-9rm8/GHSA-pr9r-gxgp-9rm8.json
CWE IDs: ["CWE-400"]
Alternative ID: GHSA-pr9r-gxgp-9rm8
Finding: F211
Auto approve: 1