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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenCTI-Platform | opencti | < 6.9.5 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 1 module
-
OpenCTI Authentication Bypass and Notifier EJS Remote Code Execution
exploit/linux/http/opencti_notifier_rce
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | pycti | < 6.9.5 | 6.9.5 | PYSEC-2026-2265 |
Advisories 1
- WID-SEC-2026-1036 OpenCTI: Schwachstelle ermöglicht Codeausführung BSI CERT-Bund (WID) · Apr 9, 2026