Hi n8n Team and Community,
I recently came across the GitHub Security Advisory GHSA-v364-rw7m-3263 (CVE-2026-21877), which mentions a critical vulnerability affecting certain n8n versions and recommends upgrading to 1.121.3 or later.
I have a couple of questions:
-
This advisory appeared quite suddenly in GitHub Security Alerts. Was this part of a coordinated disclosure after a fix was released?
-
Should we strictly follow the version ranges mentioned in GitHub Advisories (for example, affected versions
>= 0.123.0and< 1.121.3)? -
Is upgrading to the patched version immediately recommended even if we are not actively using the affected node (e.g., Git node)?
-
For self-hosted users, is there any additional mitigation we should consider beyond upgrading?
Would appreciate clarification from the maintainers or anyone who has more insight into how these advisories are published and how we should treat them in production environments.
Thanks in advance ![]()