Description
LuCI versions fail to properly encode DHCPv6 lease hostnames before rendering in status tables, allowing adjacent network attackers to inject HTML markup. Attackers can send a DHCPv6 Client FQDN containing script tags that execute in the administrator's browser when viewing DHCP lease pages.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| openwrt | luci | — | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- LuCI DHCPv6 - Lease Hostname Stored Cross-Site Scripting EDB-52637 · dos · Aug 11, 2026
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- GitHub Security Advisory (GHSA-686p-p8p9-x6fh) vendor-advisory
- VulnCheck Advisory: LuCI DHCPv6 Lease Hostname Stored Cross-Site Scripting third-party-advisory