CVE-2026-59838: Execute unauthorized code or commands in Fortinet FortiSIEM
A improper neutralization of script-related html tags in a web page (basic xss) vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4, FortiSIEM 7.2.0 through 7.2.6, FortiSIEM 7.1 all versions, FortiSIEM 7.0 all versions, FortiSIEM 6.7 all versions, FortiSIEM 6.6 all versions, FortiSIEM 6.5 all versions, FortiSIEM 6.4 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>
AI Analysis
Technical Summary
This vulnerability in Fortinet FortiSIEM involves improper neutralization of script-related HTML tags in web pages, leading to a basic cross-site scripting (XSS) flaw. This can allow an attacker with high privileges and user interaction to execute unauthorized code or commands. The vulnerability affects FortiSIEM versions 6.2.0, 6.3.0, 6.4.0, 6.5.0, 6.6.0, 6.7.0, 7.0.0, 7.1.0, 7.2.0, 7.3.0, and 7.4.0. The CVSS 3.1 base score is 5.3 (medium severity), reflecting network attack vector, low attack complexity, required privileges and user interaction, and impacts on confidentiality, integrity, and availability. An official fix has been released by Fortinet.
Potential Impact
Successful exploitation can lead to execution of unauthorized code or commands within the context of the vulnerable FortiSIEM web interface. This may compromise confidentiality, integrity, and availability of the system. The attacker requires high privileges and user interaction to exploit this vulnerability.
Mitigation Recommendations
An official patch is available from Fortinet to address this vulnerability. It is recommended to apply the official fix promptly to remediate the issue. No additional mitigation actions are specified beyond applying the patch.
CVE-2026-59838: Execute unauthorized code or commands in Fortinet FortiSIEM
Description
A improper neutralization of script-related html tags in a web page (basic xss) vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4, FortiSIEM 7.2.0 through 7.2.6, FortiSIEM 7.1 all versions, FortiSIEM 7.0 all versions, FortiSIEM 6.7 all versions, FortiSIEM 6.6 all versions, FortiSIEM 6.5 all versions, FortiSIEM 6.4 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>
CVSS v3.1
Score 5.3medium
Affected software
cpe:2.3:a:fortinet:fortisiem:7.4.0:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortisiem:7.3.4:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortisiem:7.3.3:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortisiem:7.3.2:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortisiem:7.3.1:*:*:*:*:*:*:*cpe:2.3:a:fortinet:fortisiem:7.3.0:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Fortinet FortiSIEM involves improper neutralization of script-related HTML tags in web pages, leading to a basic cross-site scripting (XSS) flaw. This can allow an attacker with high privileges and user interaction to execute unauthorized code or commands. The vulnerability affects FortiSIEM versions 6.2.0, 6.3.0, 6.4.0, 6.5.0, 6.6.0, 6.7.0, 7.0.0, 7.1.0, 7.2.0, 7.3.0, and 7.4.0. The CVSS 3.1 base score is 5.3 (medium severity), reflecting network attack vector, low attack complexity, required privileges and user interaction, and impacts on confidentiality, integrity, and availability. An official fix has been released by Fortinet.
Potential Impact
Successful exploitation can lead to execution of unauthorized code or commands within the context of the vulnerable FortiSIEM web interface. This may compromise confidentiality, integrity, and availability of the system. The attacker requires high privileges and user interaction to exploit this vulnerability.
Mitigation Recommendations
An official patch is available from Fortinet to address this vulnerability. It is recommended to apply the official fix promptly to remediate the issue. No additional mitigation actions are specified beyond applying the patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- fortinet
- Date Reserved
- 2026-07-07T15:21:29.438Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
Threat ID: 6a57970468715ace43de473e
Added to database: 07/15/2026, 14:19:48 UTC
Last enriched: 07/15/2026, 14:33:55 UTC
Last updated: 07/15/2026, 14:48:46 UTC
Views: 4
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