Vulnerability Description
OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. In versions 6.6.0 through 6.9.12, there is a privilege escalation vulnerability that can be exploited by unauthenticated attackers to query the API as any existing user, including the default admin account. This issue has been fixed in version 6.9.13. As a workaround, the default admin can be disabled using the `APP__ADMIN__EXTERNALLY_MANAGED` configuration.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Citeum | Opencti | >= 6.9.0, < 6.9.13 |
Related Weaknesses (CWE)
References
- https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-6vvv-vmfr-xMitigationVendor Advisory
FAQ
What is CVE-2026-27960?
CVE-2026-27960 is a vulnerability with a CVSS score of 9.8 (CRITICAL). OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. In versions 6.6.0 through 6.9.12, there is a privilege escalation vulnerability that can be exploit...
How severe is CVE-2026-27960?
CVE-2026-27960 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-27960?
Check the references section above for vendor advisories and patch information. Affected products include: Citeum Opencti.