CVE-2025-26621

MediumCVSS 6.8/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 6.8/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

Weakness enumeration

CWE-94CWE-1321

Affected software

No affected versions have been published.

Timeline

Published
May 19, 2025
Last modified
Jun 17, 2026
NVD status
Analyzed

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