CVE-2019-16154 Cross-site scripting in FortiAuthenticator WEB UI

What is CVE-2019-16154?

CVE-2019-16154 is a medium-severity cross-site scripting vulnerability in Fortinet FortiAuthenticator WEB UI, published on 7 Jan 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

An improper neutralization of input during web page generation in FortiAuthenticator WEB UI 6.0.0 may allow an unauthenticated user to perform a cross-site scripting attack (XSS) via a parameter of the logon page.

Weakness: CWE-79

Which versions are affected by CVE-2019-16154?

It affects 1 product.

Products include Fortinet Fortiauthenticator.

How do I fix CVE-2019-16154?

No fix has been published for CVE-2019-16154 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2019-16154 being exploited?

There is no known exploitation of CVE-2019-16154 in the wild and no public exploit code.

Other vulnerabilities in Fortinet FortiAuthenticator WEB UI

• CVE-2026-44277 Missing authorization in FortiAuthenticator Critical 9.1
• CVE-2013-6990 Privilege escalation in n/a Critical 9.0
• CVE-2021-43067 Information disclosure in Fortinet FortiAuthenticator High 8.3
• CVE-2021-22124 Denial of service in Fortinet FortiSandbox, FortiAuthenticator High 7.5
• CVE-2015-1455 Hardcoded credentials in n/a High 7.5

Sources

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

Also known as GHSA-3g24-4p5j-c5q8.