CVE-2020-6804: Mozilla Webthings Gateway

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

A reflected XSS vulnerability exists within the gateway, allowing an attacker to craft a specialized URL which could steal the user's authentication token. When combined with CVE-2020-6803, an attacker could fully compromise the system.

Affected products

• Mozilla Webthings Gateway: from 0.3.0, before 0.12.0 (fixed in 0.12.0)

Published 2020-02-28. Last modified 2026-06-17.