CVE-2026-44791: n8n Has an XML Node Prototype Pollution Patch Bypass

May 14, 2026

An authenticated user with permission to create or modify workflows could bypass the patch for GHSA-hqr4-h3xv-9m3r in the XML node. When combined with other nodes, this could lead to RCE on the n8n host.

References

github.com/advisories/GHSA-hqr4-h3xv-9m3r
github.com/advisories/GHSA-wrwr-h859-xh2r
github.com/n8n-io/n8n/security/advisories/GHSA-wrwr-h859-xh2r
nvd.nist.gov/vuln/detail/CVE-2026-44791

Code Behaviors & Features

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