CVE-2025-26621 HIGH

CVE-2025-26621: OpenCTI vulnerable to Denial of Service through web hook

Vendor Opencti-Platform
Product opencti
Weakness CWE-94 · Code injection
Published May 19, 2025
Last update May 19, 2025

CVSS base score

7.6/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H

What the vulnerability does

01Description

OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to version 6.5.2, any user with the capability manage customizations can edit webhook that will execute javascript code. This can be abused to cause a denial of service attack by prototype pollution, making the node js server running the OpenCTI frontend become unavailable. Version 6.5.2 fixes the issue.

Key dates

02Disclosure timeline

May 19, 2025 CVE published
May 19, 2025 Record updated