CVE-2026-39980— OpenCTI affected by RCE via notifier template
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I. Basic Information for CVE-2026-39980
Vulnerability Information
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Vulnerability Title
OpenCTI affected by RCE via notifier template
Source: NVD (National Vulnerability Database)
Vulnerability Description
OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 6.9.5, the safeEjs.ts file does not properly sanitize EJS templates. Users with the Manage customization capability can run arbitrary JavaScript in the context of the OpenCTI platform process during notifier template execution. This vulnerability is fixed in 6.9.5.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1336
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenCTI 安全漏洞
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 6.9.5之前版本存在安全漏洞，该漏洞源于safeEjs.ts文件未正确清理EJS模板，可能导致具有管理自定义能力的用户在通知程序模板执行期间运行任意JavaScript。
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)
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| OpenCTI-Platform | opencti | < 6.9.5 | - |
II. Public POCs for CVE-2026-39980
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 12306 chars
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III. Intelligence Information for CVE-2026-39980
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IV. Related Vulnerabilities
Same product: opencti
- CVE-2026-27960
OpenCTI privilege escalation and unauthenticated access via - 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-2026-27960
OpenCTI privilege escalation and unauthenticated access via - 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-1336
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AstrBotDevs AstrBot Dashboard API t2i.py create_template spe - CVE-2026-34587
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V. Comments for CVE-2026-39980
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