CVE-2026-54307: n8n: Credential Exfiltration via Permission Bypass

June 16, 2026

A member-level user with editor access to a shared workflow could reference credentials they do not own via specific public API endpoints. Credential ownership checks were only enforced partially leading to cross-user credential access.

This issue affects instances where workflow sharing is enabled and at least one workflow has been shared with a member-level user as an Editor.

References

github.com/advisories/GHSA-pmqw-72cg-wx85
github.com/n8n-io/n8n/security/advisories/GHSA-pmqw-72cg-wx85
nvd.nist.gov/vuln/detail/CVE-2026-54307

Code Behaviors & Features

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