CVE-2026-25972
MEDIUMCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Lifecycle Timeline
2Description
An improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4 may allow a remote unauthenticated attacker to provide arbitrary data enabling a social engineering attack via spoofed URL parameters.
Analysis
FortiSIEM 7.3.0-7.3.4 and 7.4.0 are vulnerable to reflected cross-site scripting that allows unauthenticated remote attackers to inject malicious scripts through URL parameters, enabling social engineering attacks against users who click malicious links. The vulnerability requires user interaction to trigger but has no authentication requirements, making it practical for phishing campaigns that redirect victims to spoofed pages.
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.
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