CVE-2026-26248 | BDVDB-2026-403033 Detail

FortinetFortiSandbox

Description#

A improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8, FortiSandbox 4.2 all versions, FortiSandbox Cloud 5.0.4 through 5.0.5, FortiSandbox PaaS 5.0.4 through 5.0.5 may allow an unauthenticated attacker to perform an XSS attack via social engineering and crafted HTTP requests.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References#

https://fortiguard.fortinet.com/psirt/FG-IR-26-142

Exploit#

No public exploit known

History#

Version 12026-11-10Record published in the CVE List.
Version 22026-11-11Most recent update recorded in the CVE List.

Published

Published: 2026-11-10
Last modified: 2026-11-11

Vendor information

Vendor: Fortinet
Product: FortiSandbox

All Fortinet vulnerabilities

Score

7.9 High

EPSS

Not available

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Cross-Site Scripting

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 5.0.0 and <= 5.0.5
Fixed
Not stated
Vulnerable
>= 4.4.0 and <= 4.4.8
Fixed
Not stated
Vulnerable
>= 4.2.1 and <= 4.2.8
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.9 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).