CVE-2026-39980 — OpenCTI affected by RCE via notifier template
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…
Published: 2026-04-09 · CVSS: 9.1 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7