CVE-2026-39980

HIGH EPSS 40.3%
Published Apr 9, 20262mo ago · Modified Jun 17, 20261w ago
7.2 CVSS 3.1
High
Find Similar
Published Apr 9, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.2
Exploitability
1.2
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
40.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-1336

Affected Products 1

VendorProductVersionRange
citeumopencti* <6.9.5

References 2

  • github.com https://github.com/OpenCTI-Platform/opencti/releases/tag/6.9.5
    ProductRelease Notes
  • github.com https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-jv9r-jw2f-rhrf
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.