Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.
From VID-E45C3669-CAF2-11E9-851A-DCF3AAA3F3FF:
The WebKitGTK project reports many vulnerabilities,
including several arbitrary code execution vulnerabilities.
With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.
– Scott Cheney, Manager of Information Security, Sierra View Medical Center