CVE-2026-33696
CVE-2026-33696 · n8n Vulnerable to Prototype Pollution in XML & GSuiteAdmin node parameters lead to RCE
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 9.4 · Critical · EPSS 0.8% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
n8n
- Versions
- < 1.123.27: Affected
- >= 2.0.0-rc.0, < 2.13.3: Affected
- = 2.14.0: Affected
No fix published
n8n npm
- Versions
- 2.14.0
- Affected ranges
- SEMVER: ≥ 2.14.0, < 2.14.1
Update to 2.14.1
n8n npm
- Affected ranges
- SEMVER: ≥ 2.0.0-rc.0, < 2.13.3
Update to 2.13.3
n8n npm
- Affected ranges
- SEMVER: < 1.123.27
Update to 1.123.27