CVE-2026-25049Public exploitNetwork attack vector

Authenticated command execution via expression sandbox escape

Published Feb 4, 2026 · Updated Feb 4, 2026

Expression sandbox escape in n8n before 1.123.17 and 2.0.0 through 2.5.1 allows remote authenticated users to run host commands. Expression defenses inspect member access but miss object-destructuring access to the Function constructor, allowing crafted expressions to reach Node.js child_process. Workflow creation or modification permission is required, and commands run with the n8n service process's host privileges.

CVSS severity9.4
Critical
EPSS probability1.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Expression sandbox escape in n8n before 1.123.17 and 2.0.0 through 2.5.1 allows remote authenticated users to run host commands. Expression defenses inspect member access but miss object-destructuring access to the Function constructor, allowing crafted expressions to reach Node.js child_process. Workflow creation or modification permission is required, and commands run with the n8n service process's host privileges.

The record

CVE
CVE-2026-25049
Published
Feb 4, 2026
Updated
Feb 4, 2026
Vendor
n8n
Product
n8n
Classifications
CWE-913, T1059.007
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 1.123.17
  2. Affected versionversion=< 2.5.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

n8n · n8nversion=< 1.123.17; version=< 2.5.2

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

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 exploitPublished

Weakness, pattern, technique

CWE-913Improper Control of Dynamically-Managed Code Resources
T1059.007JavaScript/JScript

Public exploit references

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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