Vulnerability DatabaseCVE-2019-25369
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CVE-2019-25369
Published:February 15, 2026
Updated:August 06, 2026
OPNsense 19.1 contains a stored cross-site scripting vulnerability in the system_advanced_sysctl.php endpoint that allows attackers to inject persistent malicious scripts via the tunable parameter. Attackers can submit POST requests with script payloads that are stored and executed in the context of authenticated user sessions when the page is viewed.
Affected Packages
https://github.com/opnsense/plugins.git (GITHUB):
Affected version(s) >=15.7.2 <19.7.d
Fix Suggestion:
Update to version 19.7.d
Related Resources (4)
https://opnsense.org
https://forum.opnsense.org/index.php?topic=11469.0
https://www.exploit-db.com/exploits/46351
https://www.vulncheck.com/advisories/opnsense-stored-xss-via-systemadvancedsysctlphp
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CVSS v4
Base Score:
5.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79
EPSS
Base Score:
0.20