CVE-2026-27960— OpenCTI privilege escalation and unauthenticated access via default admin account
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I. Basic Information for CVE-2026-27960
Vulnerability Information
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Vulnerability Title
OpenCTI privilege escalation and unauthenticated access via default admin account
Source: NVD (National Vulnerability Database)
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
认证机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenCTI 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenCTI是OpenCTI开源的一个开放网络威胁情报平台。 OpenCTI 6.6.0版本至6.9.12版本存在授权问题漏洞。攻击者利用该漏洞可以以任何现有用户（包括默认管理员帐户）的身份查询 API。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Shenlong Deep Dive — AI Deep Analysis
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| OpenCTI-Platform | opencti | >= 6.6.0, < 6.9.13 | - |
II. Public POCs for CVE-2026-27960
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same product: opencti
- CVE-2026-39980
OpenCTI affected by RCE via notifier template - CVE-2026-21886
OpenCTI's GraphQL Mutations Allow Deletion of Unrelated Enti - CVE-2026-21887
OpenCTI has a Semi-Blind SSRF via Unvalidated External URL i - CVE-2020-37044
OpenCTI 3.3.1 - Cross Site Scripting - CVE-2020-37041
OpenCTI 3.3.1 - Directory Traversal
Same vendor: OpenCTI-Platform
- CVE-2026-39980
OpenCTI affected by RCE via notifier template - CVE-2026-21886
OpenCTI's GraphQL Mutations Allow Deletion of Unrelated Enti - CVE-2026-21887
OpenCTI has a Semi-Blind SSRF via Unvalidated External URL i - CVE-2025-61782
Open Redirect in OpenCTI's SAML Authentication Flow - CVE-2025-61781
GraphQL IDOR allows authenticated user to delete workspace c
Same weakness: CWE-287
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