CVE-2025-26621

MEDIUM EPSS 27.2%
Published May 19, 20251y ago · Modified Jun 17, 20261w ago
6.8 CVSS 3.1
Medium
Find Similar
Published May 19, 2025 1y 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 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.

CVSS Details

Base Score
6.8
Exploitability
2.3
Impact
4.0
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Changed
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
27.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-1321
CWE-94 Improper Control of Generation of Code (Code Injection) Injection

Affected Products 1

VendorProductVersionRange
citeumopencti* <6.5.2

References 2

  • github.com https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-gq63-jm3h-374p
    Vendor Advisory
  • github.com https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-mf88-g2wq-p7qm
    Not Applicable

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.