TI-2025-22555 Aliases CVE-2025-31366 GHSA-8mjg-h7v2-89h4

Cross-site scripting in Fortinet FortiSASE

LOW 27CWE-79Published 2025-10-14 · Updated 2026-10-15

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

An Improper Neutralization of Input During Web Page Generation vulnerability [CWE-79] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiProxy 7.6.0 through 7.6.3, FortiProxy 7.4 all versions, FortiProxy 7.2 all versions, FortiProxy 7.0 all versions, FortiSASE 25.2.a may allow an unauthenticated attacker to perform a reflected cross site scripting (XSS) via crafted HTTP requests.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00401 34th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
Fortinet	FortiSASE	25.2.a	—	No fix listed	CNA
Fortinet	FortiOS	7.6.0 – 7.6.2; 7.4.0 – 7.4.7; 7.2.0 – 7.2.13; 7.0.0 – 7.0.19; 6.4.0 – 6.4.16	—	No fix listed	CNA
Fortinet	FortiProxy	7.6.0 – 7.6.3; 7.4.0 – 7.4.8; 7.2.0 – 7.2.16; 7.0.0 – 7.0.23	—	No fix listed	CNA

FortiSASE VendorFortinet Affected 25.2.a Fixed in — No fix listed CNA
FortiOS VendorFortinet Affected 7.6.0 – 7.6.2; 7.4.0 – 7.4.7; 7.2.0 – 7.2.13; 7.0.0 – 7.0.19; 6.4.0 – 6.4.16 Fixed in — No fix listed CNA
FortiProxy VendorFortinet Affected 7.6.0 – 7.6.3; 7.4.0 – 7.4.8; 7.2.0 – 7.2.16; 7.0.0 – 7.0.23 Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPE	Versions	Role	Vendor
cpe:2.3:o:fortinet:fortios::::::::	6.4.0 to before 7.4.9; 7.6.0 to before 7.6.4	Vulnerable	Fortinet
cpe:2.3:a:fortinet:fortiproxy::::::::	7.0.0 to before 7.6.4	Vulnerable	Fortinet
cpe:2.3:a:fortinet:fortisase:25.3.40::::feature:::	25.3.40	Vulnerable	Fortinet
cpe:2.3:a:fortinet:fortisase:25.3.40::::mature:::	25.3.40	Vulnerable	Fortinet

cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* Versions 6.4.0 to before 7.4.9; 7.6.0 to before 7.6.4 Vulnerable ·Fortinet
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:* Versions 7.0.0 to before 7.6.4 Vulnerable ·Fortinet
cpe:2.3:a:fortinet:fortisase:25.3.40:*:*:*:feature:*:*:* Versions 25.3.40 Vulnerable ·Fortinet
cpe:2.3:a:fortinet:fortisase:25.3.40:*:*:*:mature:*:*:* Versions 25.3.40 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-31366
2026-10-03 Alias added: GHSA-8mjg-h7v2-89h4

References

Advisory 1

https://fortiguard.fortinet.com/psirt/FG-IR-24-542

TI-2026-20057 Authentication bypass in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
TI-2025-18911 Heap-based buffer overflow in Fortinet FortiSwitchManager KEVCVSS 3.1CRITICAL 9.8
TI-2024-36904 Authentication bypass in Fortinet FortiOS KEVCVSS 3.1CRITICAL 9.8
TI-2024-15234 A use of externally-controlled format string in Fortinet FortiOS versions 7.4.0 through… KEVCVSS 3.1CRITICAL 9.8
TI-2024-14448 Out-of-bounds write in Fortinet FortiOS KEVCVSS 3.1CRITICAL 9.8
TI-2023-12585 Heap-based buffer overflow in Fortinet FortiOS-6K7K KEVCVSS 3.1CRITICAL 9.8

See all 276 →

Sources

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