CVE-2026-61875 | luci-app-upnp contains a stored cross-site scripting vulnera… | CVSS 8.8 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.

Metadata

CVE ID: CVE-2026-61875
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-07-10 21:54 UTC
Published: 2026-07-12 12:06 UTC
Last updated: 2026-07-12 12:06 UTC
Primary CWE: CWE-79
Improper Neutralization of Input During Web Page Generation …
Vendor / Product: openwrt / luci
Sources: cve.org · NVD

Severity & Metrics

8.8 HIGH CVSS 3.1

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products (1)

Vendor	Product	Platform	Versions
openwrt	luci	—	—

Weakness (CWE)

CWE	Source	Description
CWE-79	cna	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS scores (2)

Score	Severity	Version	Source	Vector
8.8	HIGH	3.1	cna	CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
8.7	HIGH	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

References (2)

GitHub Security Advisory (GHSA-8v49-6387-7f89) https://github.com/openwrt/luci/security/advisories/GHSA-8v49-6387-7f89
VulnCheck Advisory: luci-app-upnp Stored XSS via UPnP Port Mapping Description https://www.vulncheck.com/advisories/luci-app-upnp-stored-xss-via-upnp-port-mapping-description