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 ca

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.

Affected Products

References

• https://forum.opnsense.org/index.php?topic=11469.0(Release Notes)
• https://opnsense.org(Product)
• https://www.exploit-db.com/exploits/46351(Exploit, Third Party Advisory, VDB Entry)
• https://www.vulncheck.com/advisories/opnsense-reflected-xss-via-systemadvancedsysctlphp(Broken Link)