CVE-2026-61876 EXPLOIT
8.8
HIGH · CVSS 3.1 · EPSS 1.3% (pctl 69)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 8.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
| EPSS | 1.28% — more likely to be exploited than 69% of all CVEs |
| Weakness | CWE-79 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2026-07-12 |
| Last modified | 2026-07-14 |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | LuCI DHCPv6 - Lease Hostname Stored Cross-Site Scripting | 2026-08-11 |
References
→ the Explorer · watch your stack · NVD