CVE-2026-59838
Fortinet FortiSIEM Cross-Site Scripting Vulnerability
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>
INFO
Published Date :
July 15, 2026, 2:18 p.m.
Last Modified :
July 15, 2026, 2:18 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 6abe59d8-c742-4dff-8ce8-9b0ca1073da8 | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update FortiSIEM to a patched version.
- Apply vendor-released security updates.
- Validate system security configurations.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-59838.
| URL | Resource |
|---|---|
| https://fortiguard.fortinet.com/psirt/FG-IR-26-149 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-59838 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-59838
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-59838 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-59838 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Jul. 15, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['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:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.2.6:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.2.5:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.2.4:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.2.3:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.2.2:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.2.1:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.2.0:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.1.9:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.1.8:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.1.7:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.1.6:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.1.5:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.1.4:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.1.3:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.1.2:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.1.1:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.1.0:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.0.4:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.0.3:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.0.2:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.0.1:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:7.0.0:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.7.10:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.7.9:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.7.8:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.7.7:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.7.6:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.7.5:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.7.4:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.7.3:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.7.2:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.7.1:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.7.0:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.6.5:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.6.4:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.6.3:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.6.2:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.6.1:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.6.0:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.5.3:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.5.2:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.5.1:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.5.0:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.4.4:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.4.3:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.4.2:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.4.1:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.4.0:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.3.3:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.3.2:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.3.1:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.3.0:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.2.1:*:*:*:*:*:*:*', 'cpe:2.3:a:fortinet:fortisiem:6.2.0:*:*:*:*:*:*:*'], 'vendor': 'Fortinet', 'product': 'FortiSIEM', 'versions': [{'status': 'affected', 'version': '7.4.0'}, {'status': 'affected', 'version': '7.3.0', 'versionType': 'semver', 'lessThanOrEqual': '7.3.4'}, {'status': 'affected', 'version': '7.2.0', 'versionType': 'semver', 'lessThanOrEqual': '7.2.6'}, {'status': 'affected', 'version': '7.1.0', 'versionType': 'semver', 'lessThanOrEqual': '7.1.9'}, {'status': 'affected', 'version': '7.0.0', 'versionType': 'semver', 'lessThanOrEqual': '7.0.4'}, {'status': 'affected', 'version': '6.7.0', 'versionType': 'semver', 'lessThanOrEqual': '6.7.10'}, {'status': 'affected', 'version': '6.6.0', 'versionType': 'semver', 'lessThanOrEqual': '6.6.5'}, {'status': 'affected', 'version': '6.5.0', 'versionType': 'semver', 'lessThanOrEqual': '6.5.3'}, {'status': 'affected', 'version': '6.4.0', 'versionType': 'semver', 'lessThanOrEqual': '6.4.4'}, {'status': 'affected', 'version': '6.3.0', 'versionType': 'semver', 'lessThanOrEqual': '6.3.3'}, {'status': 'affected', 'version': '6.2.0', 'versionType': 'semver', 'lessThanOrEqual': '6.2.1'}], 'defaultStatus': 'unaffected'}] Added 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> Added CVSS V3.1 AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L Added CWE CWE-80 Added Reference https://fortiguard.fortinet.com/psirt/FG-IR-26-149