CVE-2021-36172 XML external entity in Fortinet FortiPortal

What is CVE-2021-36172?

CVE-2021-36172 is a medium-severity vulnerability in Fortinet FortiPortal, published on 2 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-611

Which versions are affected by CVE-2021-36172?

It affects 1 product.

Products include Fortinet Fortiportal.

How do I fix CVE-2021-36172?

No fix has been published for CVE-2021-36172 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-36172 being exploited?

There is no known exploitation of CVE-2021-36172 in the wild and no public exploit code.

Other vulnerabilities in Fortinet FortiPortal

• CVE-2021-32590 SQL injection in Fortinet FortiPortal Critical 9.9
• CVE-2021-32588 Hardcoded credentials in Fortinet FortiPortal Critical 9.8
• CVE-2017-7342 Security feature bypass in Fortinet FortiPortal Critical 9.8
• CVE-2017-7337 Missing authorization in Fortinet FortiPortal Critical 9.1
• CVE-2025-24470 Path traversal in FortiPortal High 8.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-769g-xf8v-jx9v.