CVE-2019-25377
Medium
Description
OPNsense 19.1 contains a reflected cross-site scripting vulnerability in the system_advanced_sysctl.php endpoint that allows attackers to inject malicious scripts via the value parameter. Attackers can craft POST requests with script payloads in the value parameter to execute JavaScript in the context of authenticated user sessions.
SeverityMedium
CVSS5.4
Exploit probability—
ProductOpnsense
PublishedFeb 15, 2026
First seenFeb 15, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| opnsense opnsense | 19.1 | — |
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