LuCI DHCPv6 Cross Site Scripting

OpenWrt LuCI suffers from a cross site scripting vulnerability. An unauthenticated adjacent-network attacker can inject malicious HTML/JavaScript via DHCPv6 Client FQDN option 39. The hostname is stored by odhcpd and rendered unsafely via innerHTML in LuCI status tables. Exploit Title: LuCI DHCPv...

LuCI DHCPv6 - Lease Hostname Stored Cross-Site Scripting

Exploit Title: LuCI DHCPv6 - Lease Hostname Stored Cross-Site Scripting CVE: CVE-2026-61876 Date: 2026-07-13 Exploit Author: Mohammed Idrees Banyamer Author Country: Jordan Instagram: @banyamersecurity Author GitHub: https://github.com/mbanyamer Author Blog : https://banyamersecurity.com/blog/...

CVE-2026-61876

LuCI DHCPv6 lease hostnames are not properly encoded before rendering in status pages, enabling stored cross-site scripting. An adjacent attacker can deliver a DHCPv6 Client FQDN containing script tags that execute in the administrator’s browser when viewing DHCP lease pages. Affected: LuCI web i...