CVE-2026-86073

Description

n8n is an open source workflow automation platform. Prior to 2.37.7 and 2.38.1, the OAuth token endpoint bound an authorization code's first access token to the consented resource but did not bind its refresh token. Refreshing checked only that the requested resource was registered, not that it matched the original grant. An OAuth client approved for one workflow could substitute a different workflow URL in the resource parameter and obtain a valid token for an unapproved workflow accessible to the consenting user. This issue is fixed in versions 2.37.7 and 2.38.1.

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-cw9w-vv67-hf73

https://github.com/n8n-io/n8n/releases/tag/[email protected]

https://github.com/n8n-io/n8n/releases/tag/[email protected]

https://github.com/n8n-io/n8n/pull/37588

https://github.com/n8n-io/n8n/pull/37122

https://github.com/n8n-io/n8n/commit/380788fd9a3264c83161e868026a98731d274d88

https://github.com/n8n-io/n8n/commit/18458482861097a26f874f30ad7e8136e268475c

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-73162

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS