FG-IR-26-110: Multiple Stored XSS

Published Apr 14, 2026
·
Updated

An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] in FortiSandbox and FortiSandbox Cloud may allow a privileged attacker to perform a stored XSS attack via crafted HTTP requests.

Affected Software

6 affected componentsFixes available
Fortinet FortiSandbox>=5.0.0<=5.0.5
Fortinet FortiSandbox>=4.4.0<=4.4.8
Fortinet FortiSandbox>=4.2
Fortinet FortiSandbox PaaS>=5.0.0<=5.0.5
Fortinet FortiSandbox PaaS>=4.4.0<=4.4.8
Fortinet FortiSandbox PaaS>=4.2

Event History

Apr 14, 2026
Advisory Published
via FortiGuard·12:00 AM
Data Sourced
via FortiGuard·12:00 AM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of FG-IR-26-110?

The FG-IR-26-110 vulnerability is classified as a medium severity issue due to its potential for stored cross-site scripting attacks.

2

How do I fix FG-IR-26-110?

To remediate FG-IR-26-110, upgrade FortiSandbox or FortiSandbox PaaS to version 5.0.6 or 4.4.9 depending on the affected version.

3

Which versions are affected by FG-IR-26-110?

FG-IR-26-110 affects FortiSandbox versions from 5.0.0 to 5.0.5, 4.4.0 to 4.4.8, and all versions from 4.2.

4

What is stored cross-site scripting in FG-IR-26-110?

Stored cross-site scripting in FG-IR-26-110 occurs when an attacker can inject malicious scripts that are permanently stored and later executed in users' browsers.

5

Who can exploit the FG-IR-26-110 vulnerability?

FG-IR-26-110 can be exploited by a privileged attacker who is able to send crafted HTTP requests to the affected system.

Contact

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