What is CVE-2026-61875?

CVE-2026-61875 is a high-severity vulnerability in Openwrt Luci, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-07-12.

How severe is CVE-2026-61875?

High severity. CVSS v3 base score is 8.8 out of 10.

XSS in Openwrt Luci

CVE-2026-61875

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 f…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Openwrt Luci

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-61875?: CVE-2026-61875 is a high-severity vulnerability in Openwrt Luci, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-07-12.
How severe is CVE-2026-61875?: High severity. CVSS v3 base score is 8.8 out of 10.