Vulnerability Description
n8n before 2.32.1 (and before 2.31.5) is vulnerable to account takeover via the Token Exchange Embed Login feature. When a validly-signed incoming token was matched to a local account by its email claim, the service did not verify that the email claim was verified, nor that the trusted key's permitted role ceiling covered that account. As a result, anyone able to obtain a token accepted by a configured trusted key (for example, a trusted issuer emitting unverified email addresses) could authenticate as any existing user and gain full account control. This issue only affects instances where the embed login feature is enabled and at least one trusted key source is configured.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| N8N | N8N | < 2.31.5 |
Related Weaknesses (CWE)
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-8342-988q-86crMitigationVendor Advisory
- https://www.vulncheck.com/advisories/n8n-before-authentication-bypass-via-token-Third Party Advisory
FAQ
What is CVE-2026-72772?
CVE-2026-72772 is a vulnerability with a CVSS score of 8.8 (HIGH). n8n before 2.32.1 (and before 2.31.5) is vulnerable to account takeover via the Token Exchange Embed Login feature. When a validly-signed incoming token was matched to a local account by its email cla...
How severe is CVE-2026-72772?
CVE-2026-72772 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-72772?
Check the references section above for vendor advisories and patch information. Affected products include: N8N N8N.