{"id":"CVE-2025-31366","title":"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…","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…","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"vendor":"fortinet","product":"fortiproxy","affected":["fortios >= 6.4.0, < 7.4.9","fortios >= 7.6.0, < 7.6.4","fortiproxy >= 7.0.0, < 7.6.4","fortisase = 25.3.40"],"patched":["fortios 7.6.4","fortiproxy 7.6.4"],"published":"2025-10-14","updated":"2026-07-08","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-31366","references":[{"url":"https://fortiguard.fortinet.com/psirt/FG-IR-24-542","label":"psirt@fortinet.com"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-864900.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.00398,"epssPercentile":0.33735,"ingestedAt":"2026-07-08T13:51:10.421Z","slug":"CVE-2025-31366","body":"## Overview\n\nAn 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.\n\n## Affected\n\n- `fortios >= 6.4.0, < 7.4.9`\n- `fortios >= 7.6.0, < 7.6.4`\n- `fortiproxy >= 7.0.0, < 7.6.4`\n- `fortisase = 25.3.40`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `fortios 7.6.4`\n- `fortiproxy 7.6.4`","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}