CVE-2019-25369
Medium
Description
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.
SeverityMedium
CVSS6.4
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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