CVE-2026-25052Network attack vector

Authenticated file disclosure via file-access race

Published Feb 4, 2026 · Updated Feb 4, 2026

Arbitrary file read in n8n before 1.123.18 or 2.0.0 through 2.4.9 allows remote authenticated users to read sensitive host files. The file-access control checks a resource before use, but a workflow can change that resource during the interval and redirect the read. Workflow creation or modification permission is required; exposed configuration data and credentials enable takeover of any account on the instance.

CVSS severity9.4
Critical
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file read in n8n before 1.123.18 or 2.0.0 through 2.4.9 allows remote authenticated users to read sensitive host files. The file-access control checks a resource before use, but a workflow can change that resource during the interval and redirect the read. Workflow creation or modification permission is required; exposed configuration data and credentials enable takeover of any account on the instance.

The record

CVE
CVE-2026-25052
Published
Feb 4, 2026
Updated
Feb 4, 2026
Vendor
n8n
Product
n8n
Classifications
CWE-367, CAPEC-29, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 4, 2026Record 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=< 1.123.18
  2. Affected versionversion=< 2.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

n8n · n8nversion=< 1.123.18; version=< 2.5.0

Published CVSS scores

9.4GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
9.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-367Time-of-check Time-of-use (TOCTOU) Race Condition
CAPEC-29Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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