CVE-2026-25115Network attack vector

Authenticated code execution via class-pattern attribute extraction

Published Feb 4, 2026 · Updated Feb 4, 2026

Sandbox escape in the Python Code node in n8n before 2.4.8 allows remote authenticated users to execute code outside the runner sandbox. The task analyzer fails to reject Python class-pattern matching that extracts blocked exception attributes such as traceback, exposing objects that bypass sandbox restrictions. Exploitation requires Task Runners and Python to be enabled; internal mode exposes the main process, while external mode confines execution to the sidecar container.

CVSS severity9.4
Critical
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sandbox escape in the Python Code node in n8n before 2.4.8 allows remote authenticated users to execute code outside the runner sandbox. The task analyzer fails to reject Python class-pattern matching that extracts blocked exception attributes such as traceback, exposing objects that bypass sandbox restrictions. Exploitation requires Task Runners and Python to be enabled; internal mode exposes the main process, while external mode confines execution to the sidecar container.

The record

CVE
CVE-2026-25115
Published
Feb 4, 2026
Updated
Feb 4, 2026
Vendor
n8n
Product
n8n
Classifications
CWE-693, T1059.006
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=< 2.4.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

n8n · n8nversion=< 2.4.8

Published CVSS scores

9.4GitHubCVSS: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.

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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-693Protection Mechanism Failure
T1059.006Python

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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