CVE-2026-27960criticalobserved exploitationCWE-287

CVE-2026-27960: critical vulnerability in OpenCTI-Platform opencti

OpenCTI privilege escalation and unauthenticated access via default admin account

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65Vexday Risk Score

Patch now. It exploitation observed by VulnCheck and has a working public exploit.

ssvc Actcvss 9.8epss 7.1%
from disclosure to weaponsame day
Published on NVDMay 5
metasploitMay 4
VulnCheck+139d
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
OpenCTI-Platform · opencti
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