CVE-2026-61876

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 v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.1 / Impact : 6.0

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/openwrt/luci/security/advisories/GHSA-686p-p8p9-x6fh
https://www.vulncheck.com/advisories/luci-dhcpv6-lease-hostname-stored-cross-site-scripting
https://github.com/openwrt/luci/security/advisories/GHSA-686p-p8p9-x6fh

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-12 12:16

Updated : 2026-07-14 15:17

NVD link : CVE-2026-61876

Mitre link : CVE-2026-61876

CVE.ORG link : CVE-2026-61876

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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