CVE-2021-36172: Fortinet Fortiportal

High severity, CVSS 8.1. EPSS: 0.8% chance of exploitation in the next 30 days.

An improper restriction of XML external entity reference vulnerability in the parser of XML responses of FortiPortal before 6.0.6 may allow an attacker who controls the producer of XML reports consumed by FortiPortal to trigger a denial of service or read arbitrary files from the underlying file system by means of specifically crafted XML documents.

Affected products

• Fortinet Fortiportal: from 4.0.0, up to and including 4.0.4; from 4.1.0, up to and including 4.1.2; from 4.2.0, up to and including 4.2.4; from 5.0.0, up to and including 5.0.3; from 5.1.0, up to and including 5.1.2; from 5.2.0, up to and including 5.2.6; …

Published 2021-11-02. Last modified 2026-06-17.