Server-side Request Forgery (SSRF) Affecting @n8n/n8n-nodes-langchain package, versions <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
- creditUnknown
Introduced: 22 Jul 2026
CVE-2026-72768 (opens in a new tab)How to fix?
Upgrade @n8n/n8n-nodes-langchain to version 2.31.3, 2.32.1 or higher.
Overview
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) in the MCP Client. An attacker can access internal or otherwise restricted network resources by supplying crafted endpoints, causing the server to connect to unintended hosts and return sensitive responses through workflow execution.
Note: This is only exploitable if SSRF protection is enabled and the attacker has permissions to create or edit workflows.
Workaround
This vulnerability can be mitigated by restricting access to fully trusted users, disabling the MCP Client node via the NODES_EXCLUDE environment variable, or restricting network egress from the host to block internal and link-local address ranges.