CVE-2026-27960

CRITICAL

OpenCTI privilege escalation and unauthenticated access via default admin account

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-27960. PoCs published by ByteWraith1.

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.

Exploits (1)

References (1)

Core 1
Core References

Scores

CVSS v3 9.8
EPSS 0.0012
EPSS Percentile 31.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-287
Status published
Products (2)
citeum/opencti 6.9.0 - 6.9.13
OpenCTI-Platform/opencti >= 6.6.0, < 6.9.13
Published May 05, 2026
Tracked Since May 06, 2026