CVE-2026-65589: n8n versions before 1.123.64 fail to properly mask custom HTTP header credentials in LLM sub-node execution data, writing plaintext API keys and secrets to workflow execution records. Authenticated...

Added to the CISA Known Exploited Vulnerabilities catalog on 22 Jul 2026. Vendor: AI/ML. Product: LLM. CVSS score: 6.5.

n8n versions before 1.123.64 fail to properly mask custom HTTP header credentials in LLM sub-node execution data, writing plaintext API keys and secrets to workflow execution records. Authenticated users with access to execution data can read exposed header values and credentials that persist in ...

Required action: Review and patch if applicable to your AI infrastructure.