CVE-2026-69078

Technical Description

CTI-Transmute is affected by a server-side request forgery vulnerability in the evaluation report PDF-generation functionality.

User-controlled CTI content, including conversion names, descriptions, and comments, is converted from Markdown to HTML and rendered as a PDF using WeasyPrint. Before the patch, the renderer used WeasyPrint’s default URL-fetching behavior without restricting the protocols or destinations that could be referenced by the generated HTML.

An attacker able to supply content included in an evaluation report could inject crafted resource references using schemes such as http://, https://, or file://. When the report was rendered, CTI-Transmute could fetch these resources using the application server’s network connectivity and filesystem privileges.

Successful exploitation could allow an attacker to:

* access services available only from the CTI-Transmute server or its internal network;

* probe internal hosts and service endpoints;

* retrieve local files

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References