Security Advisory

CVE-2026-21887

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-03-12 17:00:43

Last updated 2026-03-12 17:52:55

Assigner GitHub_M

CVSS score 7.7

State PUBLISHED

Description

OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 6.8.16, the OpenCTI platform’s data ingestion feature accepts user-supplied URLs without validation and uses the Axios HTTP client with its default configuration (allowAbsoluteUrls: true). This allows attackers to craft requests to arbitrary endpoints, including internal services, because Axios will accept and process absolute URLs. This results in a semi-blind SSRF, as responses may not be fully visible but can still impact internal systems. This vulnerability is fixed in 6.8.16.

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