CVE-2019-5586 Cross-site scripting in Fortinet FortiOS

What is CVE-2019-5586?

CVE-2019-5586 is a medium-severity cross-site scripting vulnerability in Fortinet Fortios, published on 4 Jun 2019. 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

A reflected Cross-Site-Scripting (XSS) vulnerability in Fortinet FortiOS 5.2.0 to 5.6.10, 6.0.0 to 6.0.4 under SSL VPN web portal may allow an attacker to execute unauthorized malicious script code via the "param" parameter of the error process HTTP requests.

Weakness: CWE-79

Which versions are affected by CVE-2019-5586?

It affects 1 product.

Products include Fortinet Fortios.

How do I fix CVE-2019-5586?

No fix has been published for CVE-2019-5586 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-2019-5586 being exploited?

There is no known exploitation of CVE-2019-5586 in the wild and no public exploit code.

Other vulnerabilities in Fortinet Fortios

• CVE-2024-23113 Fortinet Multiple Products Format String Exploited Critical 9.8
• CVE-2022-40684 Fortinet Multiple Products Authentication Bypass Exploited Critical 9.8
• CVE-2024-55591 Fortinet FortiOS and FortiProxy Authentication Bypass Exploited Critical 9.6
• CVE-2024-21762 Fortinet FortiOS Out-of-Bound Write Exploited Critical 9.6
• CVE-2022-42475 Fortinet FortiOS Heap-Based Buffer Overflow Exploited Critical 9.3

All Fortinet Fortios vulnerabilities

Sources

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

Also known as GHSA-h6wj-gcf6-rxw5.