PT-2026-57560 · Openwrt · Luci

Lujiefsi · Published 2026-07-12 · Updated 2026-07-12 · CVE-2026-61876

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions LuCI (affected versions not specified)

Description LuCI fails to properly encode DHCPv6 lease hostnames before rendering them in status tables. This allows attackers on the same network to inject HTML markup by sending a DHCPv6 Client FQDN containing script tags. These scripts execute in the administrator's browser when the DHCP lease pages are viewed.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-61876

Affected Products

Luci

References · 5

• https://github.com/openwrt/luci/security/advisories/GHSA-686p-p8p9-x6fh · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-61876 · Security Note
• https://vulncheck.com/advisories/luci-dhcpv6-lease-hostname-stored-cross-site-scripting · Note
• https://twitter.com/CVEnew/status/2076339904523497808 · Twitter Post
• https://twitter.com/infoflowcloud/status/2076341025757433873 · Twitter Post