CVE-2026-61875
Stored XSS in luci-app-upnp lets unauthenticated LAN clients execute JavaScript in admin UI.
Is CVE-2026-61875 being exploited?
Not confirmed. CVE-2026-61875 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.55% probability of exploitation in the next 30 days.
How severe is CVE-2026-61875?
CVE-2026-61875 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-61875?
Yes. A fix has been recorded for CVE-2026-61875. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-61875 affect?
CVE-2026-61875 affects luci-app-upnp, miniupnpd, OpenWrt routers using LuCI UPnP. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-61875?
Disable UPnP, restrict LuCI access to trusted networks, and apply vendor patches when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated LAN attacker injects JS via UPnP AddPortMapping; executes in admin browser to steal cookies, hijack admin sessions, or trigger admin actions.
Patch when possible