Cross-Site Scripting in Fortinet FortiSandbox 5.0.x

Publication date: 2026-04-14

Last updated on: 2026-04-22

Assigner: Fortinet, Inc.

Description

An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.4, FortiSandbox PaaS 5.0.0 through 5.0.4 may allow an attacker to perform an XSS attack via crafted HTTP requests.

CVSS Scores

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Meta Information

Published

2026-04-14

Last Modified

2026-04-22

Generated

2026-07-06

AI Q&A

2026-04-14

EPSS Evaluated

2026-07-05

NVD

CVE-2025-61886

EUVD

EUVD-2025-209455

Affected Vendors & Products

Vendor	Product	Version / Range
fortinet	fortisandbox_cloud	5.0.4
fortinet	fortisandbox	From 5.0.0 (inc) to 5.0.5 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability is a Cross-site Scripting (XSS) issue classified as CWE-79. It exists in Fortinet FortiSandbox versions 5.0.0 through 5.0.4 and FortiSandbox PaaS versions 5.0.0 through 5.0.4. The vulnerability arises from improper neutralization of input during web page generation, which means that an attacker can inject malicious scripts via specially crafted HTTP requests.

Impact Analysis

An attacker exploiting this vulnerability can perform a Cross-site Scripting (XSS) attack, potentially allowing them to execute malicious scripts in the context of a user's browser. This can lead to the theft of sensitive information, session hijacking, or other malicious actions that compromise the integrity and confidentiality of user data.

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