CVE-2025-49595

mediumpriority · track · 0EPSS 0.005 · 41 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.47% (41st) EPSS
CVSS 4.9 · medium
Is it mine?
3 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-28

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

4.9
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU
v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:Hsecondary · security-advisories@github.comexploitability 1.2 · impact 3.6
v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV
v3.14.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USCWE-400US
04

affected products (3)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • GHSA-pr9r-gxgp-9rm8n8n Vulnerable to Denial of Service via Malformed Binary Data Requests2025-07-03ghsa · osvUS

    ## 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

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdnvdosvNVDCVE.orgMITRE
published 2025-07-03modified 2026-06-17
08

references (10)

External citations — patches, advisories, analysis.

scry

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