CVE-2019-25377

MEDIUM

5.4

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.

CVE Details

CVSS v3.1 Score5.4

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionREQUIRED

Published2/15/2026

Last Modified2/18/2026

Sourcenvd

Honeypot Sightings0

Affected Products

opnsense:opnsense

Weaknesses (CWE)

CWE-79

References

https://forum.opnsense.org/index.php?topic=11469.0(disclosure@vulncheck.com)

https://opnsense.org(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/46351(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/opnsense-reflected-xss-via-systemadvancedsysctlphp(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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