FG-IR-25-093: XSS via back button

Published Feb 10, 2026
·
Updated

An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] in FortiSandbox may allow an unauthenticated attacker to execute commands via crafted requests. FortiSandbox PaaS versions 4.4.8 and 5.0.5 contains the fix for this vulnerability.

Affected Software

4 affected componentsFixes available
Fortinet FortiSandbox>=5.0.0<=5.0.1
Fortinet FortiSandbox>=4.4.0<=4.4.7
Fortinet FortiSandbox>=4.2
Fortinet FortiSandbox>=4.0

Event History

Feb 10, 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-25-093?

The FG-IR-25-093 vulnerability is classified as a critical severity due to the potential for unauthenticated command execution.

2

How do I fix FG-IR-25-093?

To remediate FG-IR-25-093, upgrade to FortiSandbox version 4.4.8 or 5.0.5 as these contain the necessary patches.

3

Which versions of FortiSandbox are affected by FG-IR-25-093?

FortiSandbox versions 4.4.0 to 4.4.7 and 5.0.0 to 5.0.1 are affected by FG-IR-25-093.

4

Can FG-IR-25-093 be exploited remotely?

Yes, FG-IR-25-093 can be exploited remotely by an unauthenticated attacker under certain conditions.

5

What kind of attacks can FG-IR-25-093 enable?

FG-IR-25-093 enables Cross-site Scripting (XSS) attacks, which can allow execution of arbitrary commands.

Contact

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