Server-side Request Forgery (SSRF) Affecting n8n-nodes-base package, versions <1.121.42>=2.0.0-rc.0 <2.31.3>=2.32.0 <2.32.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published27 Jul 2026
- disclosed22 Jul 2026
- creditSimon Köck
Introduced: 22 Jul 2026
CVE-2026-72766 (opens in a new tab)How to fix?
Upgrade n8n-nodes-base to version 1.121.42, 2.31.3, 2.32.1 or higher.
Overview
n8n-nodes-base is a Base nodes of n8n
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via improper handling of message fields in the Send Email node. An attacker can access arbitrary files or initiate unauthorized network requests by supplying crafted non-string input to the text or HTML body fields.
Note: This is only exploitable if a pre-existing active workflow with an unauthenticated webhook exists, valid SMTP credentials are configured on the Send Email node, and untrusted input is mapped directly into the text or HTML body field.
Workaround
This vulnerability can be mitigated by auditing active workflows for Send Email nodes that map untrusted webhook or external data directly into the text or HTML body fields and removing or restricting those workflows, restricting public webhook access at the network or reverse-proxy level, and limiting workflow creation and editing permissions to fully trusted users only.