CVE-2018-6608: Opera Browser

Medium severity, CVSS 4.3. EPSS: 3.2% chance of exploitation in the next 30 days.

In the WebRTC component in Opera 51.0.2830.55, after visiting a web site that attempts to gather complete client information (such as https://ip.voidsec.com), the browser can disclose a private IP address in a STUN request.

Affected products

• Opera Opera Browser: version 51.0.2830.55 only

Published 2018-03-28. Last modified 2026-06-17.