CVE-2026-61876: critical vulnerability in openwrt luci
LuCI DHCPv6 Lease Hostname Stored Cross-Site Scripting
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.4epss 1.6%
from disclosure to weapon30 days
Published on NVDJul 12
1st PoC+30d
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.
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
openwrt · lucipublic PoCs found — 1
exploitdbwww.exploit-db.com/exploits/52637unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — openwrt luci
In the same product, most dangerous first.
CVE-2026-69096HIGHOpenWrt luci-app-dockerman Read ACL Remote Code ExecutionEPSS 3.3%CVE-2026-69095HIGHOpenWrt luci-app-bmx7 Path Traversal via bmx7-infoEPSS 0.9%CVE-2026-59260HIGHOpenWrt luci-app-samba4 read ACL remote code execution via smbdEPSS 0.9%CVE-2026-55897HIGHluci-app-advanced-reboot read ACL exposes /bin/sh through file.exec, allowing delegated users to run commands as rootEPSS 0.7%CVE-2026-72842CRITICALOpenWrt luci-app-lxc ACL Inconsistency Authentication BypassEPSS 0.6%CVE-2026-72841CRITICALluci-app-openvpn Path Traversal RCE via instance_name2EPSS 0.6%