CVE-2019-25368

MEDIUM

OPNsense 19.1 - Cross-Site Scripting via diag_backup.php Parameters

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-25368. PoCs published by Ozer Goker.

AI-analyzed exploit summary This exploit demonstrates multiple reflected and stored XSS vulnerabilities in OPNsense 19.1. It provides specific URLs, methods, parameters, and payloads for each XSS vector.

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.

Exploits (1)

exploitdb WORKING POC
by Ozer Goker · textwebappsphp
https://www.exploit-db.com/exploits/46351

This exploit demonstrates multiple reflected and stored XSS vulnerabilities in OPNsense 19.1. It provides specific URLs, methods, parameters, and payloads for each XSS vector.

Classification
Working Poc 95%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: OPNsense 19.1
Auth required
Prerequisites: Access to the OPNsense web interface · Valid credentials for authenticated endpoints
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/46351
Various Sources product
https://opnsense.org

Scores

CVSS v3 5.4
EPSS 0.0013
EPSS Percentile 3.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (2)
opnsense/opnsense 19.1
Opnsense/OPNsense 19.1
Published Feb 15, 2026
Tracked Since Feb 18, 2026