CVE-2026-61875

High

Description

luci-app-upnp contains a stored cross-site scripting vulnerability that allows unauthenticated LAN clients to inject JavaScript via UPnP IGD AddPortMapping SOAP requests. Attackers can send malicious HTML in the NewPortMappingDescription field, which miniupnpd stores and luci-app-upnp renders without output encoding, executing the payload when administrators view the UPnP or Status pages.

SeverityHigh

CVSS8.8

Exploit probability—

ProductOpenwrt Luci

PublishedJul 12, 2026

First seenJul 12, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

openwrt luci24.10.8, 25.12.5 or later

Vendor advisories

github.com/openwrt/luci/security/advisories/GHSA-8v49-6387-7f89

Affected products

Product	Affected versions	Fixed in
openwrt luci	v < 24.10.8, 25.12.0 ≤ v < 25.12.5	24.10.8, 25.12.5

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