CVE-2018-1356 Cross-site scripting in FortiSandbox

What is CVE-2018-1356?

CVE-2018-1356 is a medium-severity cross-site scripting vulnerability in Fortinet Fortisandbox, published on 9 Apr 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 FortiSandbox before 3.0 may allow an attacker to execute unauthorized code or commands via the back_url parameter in the file scan component.

Weakness: CWE-79

Which versions are affected by CVE-2018-1356?

It affects 1 product.

Products include Fortinet Fortisandbox.

How do I fix CVE-2018-1356?

No fix has been published for CVE-2018-1356 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-2018-1356 being exploited?

There is no known exploitation of CVE-2018-1356 in the wild and no public exploit code.

Other vulnerabilities in Fortinet Fortisandbox

• CVE-2026-25089 Fortinet FortiSandbox OS Command Injection Exploited Critical 9.1
• CVE-2026-39808 Fortinet FortiSandbox OS Command Injection Exploited Critical 9.1
• CVE-2026-26083 Missing authorization in FortiSandbox Critical 9.1
• CVE-2026-39813 Path traversal in FortiSandbox Critical 9.1
• CVE-2020-29011 SQL injection in Fortinet FortiSandbox High 8.8

All Fortinet Fortisandbox vulnerabilities

Sources

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

Also known as GHSA-2g3q-pfmx-p47f.