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CRITICALCVE-2026-39980Published Modified CNA GitHub_M

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. 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.

Metrics

CVSS v3.1
9.1
Severity
CRITICAL
Fixed in
—
Affected Products
1
Affected packages
  • OpenCTI-Platform / opencti
    < 6.9.5
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
References