CVE-2025-49595Network attack vector

Service interruption via empty filesystem URI handling

Published Jul 3, 2025 · Updated Jul 3, 2025

Denial of service in n8n before 1.99.0 allows remote authenticated users to interrupt service through an empty filesystem URI. The binary-data controller accepted filesystem and filesystem-v2 identifiers whose path was empty or slash-only and passed them into binary-data handling. A highly privileged authenticated account can send crafted GET requests that exhaust resources and make the service unavailable.

CVSS severity4.9
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in n8n before 1.99.0 allows remote authenticated users to interrupt service through an empty filesystem URI. The binary-data controller accepted filesystem and filesystem-v2 identifiers whose path was empty or slash-only and passed them into binary-data handling. A highly privileged authenticated account can send crafted GET requests that exhaust resources and make the service unavailable.

The record

CVE
CVE-2025-49595
Published
Jul 3, 2025
Updated
Jul 3, 2025
Vendor
n8n
Product
n8n
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.99.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

n8n · n8nversion=< 1.99.0

Published CVSS scores

4.9GitHubCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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