Vulnerability Details CVE-2026-39980
OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 6.9.5, the safeEjs.ts file does not properly sanitize EJS templates. Users with the Manage customization capability can run arbitrary JavaScript in the context of the OpenCTI platform process during notifier template execution. This vulnerability is fixed in 6.9.5.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 26.1%
CVSS Severity
CVSS v3 Score 9.1