CVE-2026-33696

CVE Enrichment

CVSS: 9.4 CRITICAL
EPSS: 0.87%
EPSS Percentile: 58.56%
CISA KEV: Not listed

Description

n8n is an open source workflow automation platform. Prior to versions 2.14.1, 2.13.3, and 1.123.27, an authenticated user with permission to create or modify workflows could exploit a prototype pollution vulnerability in the XML and the GSuiteAdmin nodes. By supplying a crafted parameters as part of node configuration, an attacker could write attacker-controlled values onto `Object.prototype`. An attacker could use this prototype pollution to achieve remote code execution on the n8n instance. The issue has been fixed in n8n versions 2.14.1, 2.13.3, and 1.123.27. Users should upgrade to one of these versions or later to remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the following temporary mitigations: Limit workflow creation and editing permissions to fully trusted users only, and/or disable the XML node by adding `n8n-nodes-base.xml` to the `NODES_EXCLUDE` environment variable. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Technical Details

CVSS Version: 4.0
CNA / NVD Source: [email protected]
Published: 26-Mar-2026 01:16
Last Modified: 17-Jun-2026 17:37
EPSS Date: 2026-10-23
CWE: CWE-1321

CVSS Vector


            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 /
                            E:X /
                            CR:X /
                            IR:X /
                            AR:X /
                            MAV:X /
                            MAC:X /
                            MAT:X /
                            MPR:X /
                            MUI:X /
                            MVC:X /
                            MVI:X /
                            MVA:X /
                            MSC:X /
                            MSI:X /
                            MSA:X /
                            S:X /
                            AU:X /
                            R:X /
                            V:X /
                            RE:X /
                            U:X

Affected Products / Versions

n8n / n8n
Version / affected range: * · before (exclusive) 1.123.27
cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*
n8n / n8n
Version / affected range: * · from (inclusive) 2.0.0 · before (exclusive) 2.13.3
cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*
n8n / n8n
Version / affected range: 2.14.0
cpe:2.3:a:n8n:n8n:2.14.0:*:*:*:*:node.js:*:*

References

[email protected]

Last enrichment sync: 24-Oct-2026 14:28
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

The issue (CVE-2026-33696, CVSS score: 9.4) has been fixed in versions 2.14.1, 2.13.3, and 1.123.27. ThreatsDay: Gogs and n8n RCE Flaws, Malware Campaigns and AI Exploit Advances

CVE (3)

Malware (8)

People (5)

Threat Actors (4)

MITRE ATT&CK (2)

Vendors (7)

Products (9)

Tools (2)

Industries (2)

Countries (6)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.