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TI-2026-42654 Aliases CVE-2026-59838GHSA-qgv9-w22c-fhgv

Cross-site scripting in Fortinet FortiSIEM

Priority LOW 24CWE-80Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-80.

Summary

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>

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00242 15th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FortinetFortiSIEM7.4.0; 7.3.0 – 7.3.4; 7.2.0 – 7.2.6; 7.1.0 – 7.1.9; 7.0.0 – 7.0.4; 6.7.0 – 6.7.10; 6.6.0 – 6.6.5; 6.5.0 – 6.5.3; 6.4.0 – 6.4.4; 6.3.0 – 6.3.3; 6.2.0 – 6.2.1—No fix listedCNA
  • FortiSIEM VendorFortinet Affected 7.4.0; 7.3.0 – 7.3.4; 7.2.0 – 7.2.6; 7.1.0 – 7.1.9; 7.0.0 – 7.0.4; 6.7.0 – 6.7.10; 6.6.0 – 6.6.5; 6.5.0 – 6.5.3; 6.4.0 – 6.4.4; 6.3.0 – 6.3.3; 6.2.0 – 6.2.1 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortisiem:*:*:*:*:*:*:*:*6.4.0 to before 7.2.7; 7.3.0 to before 7.3.5VulnerableFortinet
cpe:2.3:a:fortinet:fortisiem:7.4.0:*:*:*:*:*:*:*7.4.0VulnerableFortinet
  • cpe:2.3:a:fortinet:fortisiem:*:*:*:*:*:*:*:* Versions 6.4.0 to before 7.2.7; 7.3.0 to before 7.3.5 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortisiem:7.4.0:*:*:*:*:*:*:* Versions 7.4.0 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-59838
  2. 2026-10-03 Alias added: GHSA-qgv9-w22c-fhgv

References

Advisory 1

  • TI-2024-15229 OS command injection in Fortinet FortiSIEM CVSS 3.1CRITICAL 9.8
  • TI-2023-17481 OS command injection in Fortinet FortiSIEM CVSS 3.1CRITICAL 9.8
  • TI-2025-18918 OS command injection in Fortinet FortiSIEM CVSS 3.1CRITICAL 9.8
  • TI-2025-39605 OS command injection in Fortinet FortiSIEM CVSS 3.1CRITICAL 9.4
  • TI-2024-15230 OS command injection in Fortinet FortiSIEM CVSS 3.1CRITICAL 9.8
  • TI-2023-18387 OS command injection in Fortinet FortiSIEM CVSS 3.1CRITICAL 9.8
See all 31 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences