CVE-2025-26621

HIGH

7.6

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.

CVE Details

CVSS v3.1 Score7.6

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredHIGH

User InteractionNONE

Published5/19/2025

Last Modified8/6/2025

Sourcenvd

Honeypot Sightings0

Affected Products

citeum:opencti

Weaknesses (CWE)

CWE-94CWE-1321

References

https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-gq63-jm3h-374p(security-advisories@github.com)

https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-mf88-g2wq-p7qm(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.