Critical severity9.1NVD Advisory· Published Apr 9, 2026· Updated Apr 22, 2026
CVE-2026-39980
CVE-2026-39980
Description
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.
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Affected products
1Patches
Vulnerability mechanics
References
2- github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-jv9r-jw2f-rhrfnvdVendor Advisory
- github.com/OpenCTI-Platform/opencti/releases/tag/6.9.5nvdProductRelease Notes
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