CVE-2026-72772: n8n before 2.32.1 Authentication Bypass via Token Exchange
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
n8nto a version that resolves this vulnerability.Fixed in 2.32.1Patch n8n before 2.32.1 (and before 2.31.5) is vulnerable to account takeover via the Token Exchange Embed Login feature.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-72772?
CVE-2026-72772 has a risk rating of 66, indicating a moderate vulnerability.
How do I fix CVE-2026-72772?
To fix CVE-2026-72772, upgrade to n8n version 2.32.1 or later.
What systems are affected by CVE-2026-72772?
CVE-2026-72772 affects n8n versions prior to 2.32.1 and 2.31.5.
What kind of vulnerability is CVE-2026-72772?
CVE-2026-72772 is an authentication bypass vulnerability that allows for account takeover.
How does CVE-2026-72772 enable account takeover?
CVE-2026-72772 enables account takeover by not verifying the email claim of a validly-signed incoming token.