CVE-2026-34818: Endian Firewall Community

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Endian Firewall version 3.3.25 and prior allow stored cross-site scripting (XSS) via the remark parameter to /manage/dnsmasq/localdomains/. An authenticated attacker can inject arbitrary JavaScript that is stored and executed when other users view the affected page.

Affected products

• Endian Firewall Community: up to and including 3.3.25

Published 2026-04-02. Last modified 2026-07-24.