CVE-2026-21886 MEDIUM

CVE-2026-21886: OpenCTI's GraphQL Mutations Allow Deletion of Unrelated Entities

Vendor Opencti-Platform
Product opencti
Weakness CWE-285
Published March 17, 2026
Last update March 17, 2026

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to version 6.9.1, the GraphQL mutations "IndividualDeletionDeleteMutation" is intended to allow users to delete individual entity objects respectively. However, it was observed that this mutation can be misused to delete unrelated and sensitive objects such as analyses reports etc. This behavior stems from the lack of validation in the API to ensure that the targeted object is contextually related to the mutation being executed. Version 6.9.1 fixes the issue.

Key dates

02Disclosure timeline

March 17, 2026 CVE published
March 17, 2026 Record updated

Related vulnerabilities

04Related CVE