n8n Workflow Automation Vulnerabilities

n8n versions prior to 2.5.0 contain a critical SSH host key verification bypass in the Source Control feature that allows network-positioned attackers to perform man-in-the-middle attacks against Git operations. Affected users who have explicitly enabled and configured SSH-based source control can have their workflows injected with malicious content or have repository data intercepted without authentication. While the feature is non-default and requires explicit configuration, the vulnerability enables complete compromise of workflow integrity and potential lateral movement within automation pipelines.

A stored cross-site scripting (XSS) vulnerability in n8n workflow automation platform allows authenticated users to craft malicious workflows that execute arbitrary JavaScript in the browsers of higher-privileged users. Affected versions are n8n prior to 1.123.27, 2.13.3, and 2.14.1 (identified via CPE cpe:2.3:a:n8n-io:n8n). An attacker with workflow creation/modification permissions can exploit the `/rest/binary-data` endpoint's failure to properly sanitize HTML responses, enabling credential theft, workflow manipulation, and privilege escalation to administrative access with full same-origin context.