Description
n8n is an open source workflow automation platform. Prior to 1.123.61, 2.27.4, and, 2.28.1, an authenticated user with the default workflow:create permission could pollute Object.prototype through a crafted workflow saved, updated, or imported via the workflow API, allowing unauthenticated requests to be treated as a privileged user and exposing user and project listing endpoints. This issue is fixed in versions 1.123.61, 2.27.4, and 2.28.1.
Problem types
CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Product status
>= 2.0.0-rc.0, < 2.27.4
< 1.123.61
References
github.com/...io/n8n/security/advisories/GHSA-75qm-gp28-rcq9
github.com/n8n-io/n8n/releases/tag/n8n@2.27.4
github.com/n8n-io/n8n/releases/tag/n8n@2.28.1