Vulnerability Database

309,130

Total vulnerabilities in the database

CVE-2025-26621

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.

  • Published: May 19, 2025
  • Updated: Nov 16, 2025
  • CVE: CVE-2025-26621
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.6
  • AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H