CVE-2026-21886HIGH 8.1EPSS p13.2%
CVE-2026-21886CVE-2026-21886
Description
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.
Scoring
| CVSS 3.1 | 8.1 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
| EPSS | 0.23% probability of exploitation · percentile 13.2% · 2026-06-18T12:00:27Z |
| Published | 2026-03-17 |
| Last modified | 2026-03-19 |
Underlying weaknesses· 3
References
3
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Improper Authorizationcwe-285 | 0% | live |
| Weakness | Authorization Bypass Through User-Controlled SQL Primary Keycwe-566 | 0% | live |
| Weakness | Improperly Controlled Modification of Dynamically-Determined Object Attributescwe-915 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.