CVE-2019-25368
Multiple XSS Vulnerabilities in OPNsense diag_backup.php Endpoint
Publication date: 2026-02-15
Last updated on: 2026-02-18
Assigner: VulnCheck
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| opnsense | opnsense | 19.1 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in OPNsense 19.1 and involves multiple cross-site scripting (XSS) issues in the diag_backup.php endpoint.
Attackers can inject malicious scripts through several parameters such as GDrive_GDriveEmail, GDrive_GDriveFolderID, GDrive_GDriveBackupCount, Nextcloud_url, Nextcloud_user, Nextcloud_password, Nextcloud_password_encryption, and Nextcloud_backupdir.
By submitting POST requests containing script payloads in these parameters, attackers can execute arbitrary JavaScript within the context of authenticated administrator sessions.
How can this vulnerability impact me? :
This vulnerability allows attackers to execute arbitrary JavaScript code in the context of authenticated administrator sessions.
Such execution can lead to unauthorized actions being performed with administrator privileges, potentially compromising the security and integrity of the system.
It may also allow attackers to steal sensitive information, hijack sessions, or manipulate backup configurations.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know