SB2026111102 - Cross-site scripting in FortiSandbox
Published: November 11, 2026
Security Bulletin ID
SB2026111102
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Cross-site scripting (CVE-ID: CVE-2026-26248)
CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
The vulnerability exists due to improper neutralization of input during web page generation ('cross-site scripting') on start vnc endpoint. An unauthenticated attacker can perform an XSS attack via social engineering and crafted HTTP requests.
Remediation
Install update from vendor's website.