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High

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

  • Disclosed: 09.04.2026
  • Updated: 11.10.2026 13:19

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 software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) pycti < 6.9.5 6.9.5

References

CVSS score 7.2/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
-
Platform
Python (PyPI)
Package
pycti
Disclosed
09.04.2026
Updated
11.10.2026 13:19

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2026-2265 - PyPA Advisory Database; CC BY 4.0

Vulnerability history: pycti

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (22) in the archive
Total entries
22
First → latest
07.2022 07.2026
Without a fix
2
Exploited in attacks
0

Severity breakdown

  • Critical 3
  • High 9
  • Medium 10

Disclosures per year

Severity:
  1. OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 7.260326.0, an authorization bypass vulnerability in OpenCTI allows any authenticated user
    High · 7.1 CVE-2026-35210 < 7.260326.0 7.260326.0
  2. OpenCTI: Privilege escalation via graphQL API is abusable by organization admins, due to incorrect ACL on userEdit relationAdd
    High · 7.2 CVE-2026-44730 < 6.9.7 6.9.7
  3. 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 exploit
    Critical · 9.8 CVE-2026-27960 >= 6.9.0, < 6.9.13 6.9.13
  4. 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 this entry
    High · 7.2 CVE-2026-39980 < 6.9.5 6.9.5
  5. OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to version 6.9.1, the GraphQL mutations "IndividualDeletionDeleteMutation" is intended to all
    High · 8.1 CVE-2026-21886 < 6.9.1 6.9.1
  6. OpenCTI has Semi-Blind SSRF via Unvalidated External URL in Data Ingestion Feature
    High · 7.7 CVE-2026-21887 < 6.8.16 6.8.16
  7. OpenCTI 3.3.1 is vulnerable to a directory traversal attack via the static/css endpoint. An unauthenticated attacker can read arbitrary files from the filesystem by sending crafted GET requests with p
    High · 7.5 CVE-2020-37041 <= 3.3.1 no fix
  8. OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to version 6.8.1, the GraphQL mutation "WorkspacePopoverDeletionMutation" allows users to del
    Critical · 9.1 CVE-2025-61781 < 6.8.1 6.8.1
  9. OpenCTI is an open cyber threat intelligence (CTI) platform. Prior to version 6.4.11 any user with the capability `manage customizations` can execute commands on the underlying infrastructure where Op
    Critical · 9.1 CVE-2025-24977 >= 6.4.8, < 6.4.11 6.4.11
  10. OpenCTI is an open-source cyber threat intelligence platform. In versions below 6.2.18, because the function to limit the rate of OTP does not exist, an attacker with valid credentials or a malicious
    High · 8.1 CVE-2024-45404 < 6.2.18 6.2.18
  11. OpenCTI is an open source platform allowing organizations to manage their cyber threat intelligence knowledge and observables. Due to lack of certain security controls on the profile edit functionalit
    High · 8.1 CVE-2024-26139 < 5.12.32 5.12.32
  12. In OpenCTI through 5.2.4, a broken access control vulnerability has been identified in the profile endpoint. An attacker can abuse the identified vulnerability in order to arbitrarily change their reg
    High · 7.5 CVE-2022-30290 < 5.3.0 5.3.0

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