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CVE-2019-25368— OPNsense 19.1 Reflected XSS via diag_backup.php

Quick assessment

Affected
Opnsense OPNsense
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Deciso OPNsense是荷兰Deciso公司的一套基于FreeBSD的开源防火墙和路由软件。 Deciso OPNsense 19.1版本存在跨站脚本漏洞，该漏洞源于diag_backup.php端点中多个参数输入验证不足，可能导致在已验证管理员会话环境中执行任意JavaScript。

CVSS 5.4 · Medium EPSS 0.15% · P4

Affected Version Matrix 1

VendorProduct Version RangeStatus
Opnsense OPNsense 19.1 affected
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I. Basic Information for CVE-2019-25368

Vulnerability Information
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Vulnerability Title
OPNsense 19.1 Reflected XSS via diag_backup.php
Source: CVE Program / CVE List V5
Vulnerability Description
OPNsense 19.1 contains multiple cross-site scripting vulnerabilities in the diag_backup.php endpoint that allow attackers to inject malicious scripts through multiple parameters including GDrive_GDriveEmail, GDrive_GDriveFolderID, GDrive_GDriveBackupCount, Nextcloud_url, Nextcloud_user, Nextcloud_password, Nextcloud_password_encryption, and Nextcloud_backupdir. Attackers can submit POST requests with script payloads in these parameters to execute arbitrary JavaScript in the context of authenticated administrator sessions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Deciso OPNsense 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Deciso OPNsense是荷兰Deciso公司的一套基于FreeBSD的开源防火墙和路由软件。 Deciso OPNsense 19.1版本存在跨站脚本漏洞，该漏洞源于diag_backup.php端点中多个参数输入验证不足，可能导致在已验证管理员会话环境中执行任意JavaScript。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Opnsense OPNsense 19.1 -

II. Public POCs for CVE-2019-25368

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III. Intelligence Information for CVE-2019-25368

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Exploits & Public PoCs for CVE-2019-25368 (1)

Same Patch Batch · Opnsense · 2026-02-15 · 10 CVEs total

CVE-2019-25373 6.4 MEDIUM OPNsense 19.1 Stored XSS via firewall_rules_edit.php
CVE-2019-25369 6.4 MEDIUM OPNsense 19.1 Stored XSS via system_advanced_sysctl.php
CVE-2019-25376 6.1 MEDIUM OPNsense 19.1 Reflected XSS via proxy endpoint
CVE-2019-25375 6.1 MEDIUM OPNsense 19.1 Reflected XSS via monit interface
CVE-2019-25370 6.1 MEDIUM OPNsense 19.1 Reflected XSS via interfaces_vlan_edit.php
CVE-2019-25371 6.1 MEDIUM OPNsense 19.1 Reflected XSS via diag_ping.php
CVE-2019-25372 6.1 MEDIUM OPNsense 19.1 Reflected XSS via diag_traceroute.php
CVE-2019-25374 6.1 MEDIUM OPNsense 19.1 Reflected XSS via vpn_ipsec_settings.php
CVE-2019-25377 5.4 MEDIUM OPNsense 19.1 Reflected XSS via system_advanced_sysctl.php

IV. Related Vulnerabilities

Same product: OPNsense
Same vendor: Opnsense
Same weakness: CWE-79