CVE-2026-59838

EUVD-2026-44668

15.07.2026, 14:18

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>

Basic XSS

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	5.9 MEDIUM	NETWORK	LOW	HIGH	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Affected Products (NVD)

Vendor	Product	Version
fortinet	fortisiem	6.4.0 ≤ 𝑥 < 7.2.7
fortinet	fortisiem	7.3.0 ≤ 𝑥 < 7.3.5
fortinet	fortisiem	7.4.0

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-80 - Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
The software receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.

Vulnerability Media Exposure

[GERMAN] Fortinet FortiSIEM: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in Fortinet FortiSIEM ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen oder Code auszuführen.
Published: 2026-07-14T22:00:00+00:00

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-149