CVE-2026-39812: Execute unauthorized code or commands in Fortinet FortiSandbox
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 PaaS 5.0.0 through 5.0.5, FortiSandbox PaaS 4.4.0 through 4.4.8, FortiSandbox PaaS 4.2 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>
AI Analysis
Technical Summary
This vulnerability in Fortinet FortiSandbox products arises from improper neutralization of input during web page generation, leading to a cross-site scripting (XSS) flaw. It affects multiple versions including 4.2.x, 4.4.x, and 5.0.x releases, as well as their PaaS counterparts. Exploitation requires high privileges and user interaction, and it can result in execution of unauthorized code or commands within the context of the affected application. The vendor has released an official fix to address this issue.
Potential Impact
Successful exploitation could allow an attacker with high privileges and user interaction to execute unauthorized code or commands, potentially leading to limited confidentiality and integrity impacts. There is no indication of availability impact or known exploits in the wild at this time.
Mitigation Recommendations
An official patch is available from Fortinet to remediate this vulnerability. Users of affected FortiSandbox versions should apply the vendor-provided updates promptly to mitigate the risk. Since this is not a cloud service, remediation depends on customer action to deploy the fix.
CVE-2026-39812: Execute unauthorized code or commands in Fortinet FortiSandbox
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 PaaS 5.0.0 through 5.0.5, FortiSandbox PaaS 4.4.0 through 4.4.8, FortiSandbox PaaS 4.2 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Fortinet FortiSandbox products arises from improper neutralization of input during web page generation, leading to a cross-site scripting (XSS) flaw. It affects multiple versions including 4.2.x, 4.4.x, and 5.0.x releases, as well as their PaaS counterparts. Exploitation requires high privileges and user interaction, and it can result in execution of unauthorized code or commands within the context of the affected application. The vendor has released an official fix to address this issue.
Potential Impact
Successful exploitation could allow an attacker with high privileges and user interaction to execute unauthorized code or commands, potentially leading to limited confidentiality and integrity impacts. There is no indication of availability impact or known exploits in the wild at this time.
Mitigation Recommendations
An official patch is available from Fortinet to remediate this vulnerability. Users of affected FortiSandbox versions should apply the vendor-provided updates promptly to mitigate the risk. Since this is not a cloud service, remediation depends on customer action to deploy the fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- fortinet
- Date Reserved
- 2026-04-07T15:24:11.535Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
Threat ID: 69de650a82d89c981fbf090d
Added to database: 4/14/2026, 4:02:18 PM
Last enriched: 4/14/2026, 4:17:15 PM
Last updated: 4/14/2026, 6:18:14 PM
Views: 6
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.