CVE-2019-25368
OPNsense 19.1 Reflected XSS via diag_backup.php
- State
- Published
- Severity
- 4.8 Medium
- Published
- Feb 15, 2026
- Updated
- May 24, 2026
- Reserved
- Feb 15, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
OPNsenseOpnsense |
|
References
- ExploitDB-46351exploit
- OPNsense Official Websiteproduct
- OPNsense 19.1.1 Release Announcementpatch
- VulnCheck Advisory: OPNsense 19.1 Reflected XSS via diag_backup.phpthird-party-advisory
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