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Vulnerability details: VCID-uz4t-m6tu-cuf3
Vulnerability ID VCID-uz4t-m6tu-cuf3
Aliases CVE-2026-42234
GHSA-44v6-jhgm-p3m4
Summary n8n has a Python Task Runner Sandbox Escape Vulnerability ## Impact An authenticated user with permission to create or modify workflows containing a Python Code Node could escape the sandbox and achieve arbitrary code execution on the task runner container. - This issue only affects instances where the Python Task Runner is enabled. ## Patches The issue has been fixed in n8n versions 1.123.32, 2.17.4, and 2.18.1. Users should upgrade to one of these versions or later to remediate the vulnerability. ## Workarounds If upgrading is not immediately possible, administrators should consider the following temporary mitigations: - Limit workflow creation and editing permissions to fully trusted users only. - Disable the Python Code node by adding `n8n-nodes-base.code` to the `NODES_EXCLUDE` environment variable, or disable the Python Task Runner entirely. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-94 Improper Control of Generation of Code ('Code Injection')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00095 https://api.first.org/data/v1/epss?cve=CVE-2026-42234
epss 0.00095 https://api.first.org/data/v1/epss?cve=CVE-2026-42234
cvssv3.1 7.5 https://github.com/n8n-io/n8n
cvssv4 7.1 https://github.com/n8n-io/n8n
generic_textual HIGH https://github.com/n8n-io/n8n
cvssv3.1 7.5 https://github.com/n8n-io/n8n/security/advisories/GHSA-44v6-jhgm-p3m4
cvssv4 7.1 https://github.com/n8n-io/n8n/security/advisories/GHSA-44v6-jhgm-p3m4
generic_textual HIGH https://github.com/n8n-io/n8n/security/advisories/GHSA-44v6-jhgm-p3m4
ssvc Track https://github.com/n8n-io/n8n/security/advisories/GHSA-44v6-jhgm-p3m4
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2026-42234
cvssv4 7.1 https://nvd.nist.gov/vuln/detail/CVE-2026-42234
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2026-42234
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-42234
https://github.com/n8n-io/n8n
https://github.com/n8n-io/n8n/security/advisories/GHSA-44v6-jhgm-p3m4
https://nvd.nist.gov/vuln/detail/CVE-2026-42234
GHSA-44v6-jhgm-p3m4 https://github.com/advisories/GHSA-44v6-jhgm-p3m4
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/n8n-io/n8n
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N Found at https://github.com/n8n-io/n8n
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/n8n-io/n8n/security/advisories/GHSA-44v6-jhgm-p3m4
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N Found at https://github.com/n8n-io/n8n/security/advisories/GHSA-44v6-jhgm-p3m4
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-05-05T03:56:38Z/ Found at https://github.com/n8n-io/n8n/security/advisories/GHSA-44v6-jhgm-p3m4
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2026-42234
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N Found at https://nvd.nist.gov/vuln/detail/CVE-2026-42234
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.26494
EPSS Score 0.00095
Published At June 5, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:52:19.301872+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-44v6-jhgm-p3m4/GHSA-44v6-jhgm-p3m4.json 38.6.0