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.

INFO

Published Date :

2026-03-12T17:00:43.944Z

Last Modified :

2026-03-12T17:52:55.089Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-21887 vulnerability.

Vendors Products
Opencti-platform
  • Opencti
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-21887.

URL Resource
https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-ffm6-vvph-g5f5 cve-icon cve-icon
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CVSS Vulnerability Scoring System

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