CVE-2026-27960
OpenCTI privilege escalation and unauthenticated access via default admin account
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-287 |
| Vendor | opencti-platform |
| Product | opencti |
| Published | May 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
OpenCTI-Platform / opencti
>= 6.6.0, < 6.9.13