CVE-2026-72772
published 2026-08-11CVE-2026-72772: 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…
PriorityP353high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.26%
18.0th percentile
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
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| n8n-io | n8n | < 2.32.1 | 2.32.1 |
| n8n-io | n8n | < 2.31.5 | 2.31.5 |
| n8n | n8n | < 2.31.5 | 2.31.5 |
| n8n | n8n | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv4.08.9HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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VulDB
n8n-io n8n up to 2.31.4/2.32.0 Token Exchange Embed Login feature improper authentication
vuldb·2026-09-11·CVSS 8.9
CVE-2026-72772 [HIGH] n8n-io n8n up to 2.31.4/2.32.0 Token Exchange Embed Login feature improper authentication
A vulnerability marked as critical has been reported in n8n-io n8n up to 2.31.4/2.32.0. This vulnerability affects unknown code of the component Token Exchange Embed Login feature. This manipulation causes improper authentication.
This vulnerability is registered as CVE-2026-72772. Remote exploitation of the attack is possible. No exploit is available.
It is suggested to upgrade the affected component.
GHSA
n8n before 2.32.1 (and before 2.31.5) is vulnerable to account takeover via the Token Exchange Embed Login feature.
ghsa_unreviewed·2026-08-11
CVE-2026-72772 [HIGH] CWE-640 n8n before 2.32.1 (and before 2.31.5) is vulnerable to account takeover via the Token Exchange Embed Login feature.
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-08-11
Published