CVE-2026-59838
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Basic XSS in Fortinet FortiSIEM
Vulnerability report for CVE-2026-59838, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-07-15
Last updated on: 2026-07-15
Assigner: Fortinet, Inc.
Description
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 Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| fortinet | fortisiem | 7.4.0 |
| fortinet | fortisiem | From 7.3.0 (inc) to 7.3.4 (inc) |
| fortinet | fortisiem | From 7.2.0 (inc) to 7.2.6 (inc) |
| fortinet | fortisiem | 7.1 |
| fortinet | fortisiem | 7.0 |
| fortinet | fortisiem | 6.7 |
| fortinet | fortisiem | 6.6 |
| fortinet | fortisiem | 6.5 |
| fortinet | fortisiem | 6.4 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-80 | The product 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. |
