A user on GitHub has open-sourced a plugin demonstrating the use of the Photon Event 6 issue in VRChat in order to cause a denial of service in instances. This issue has been reported to VRChat by multiple parties, with no fix in sight.
According to an older commit where a README was present, this issue was used in a paid client, but due to internal conflict with the authors, one of the parties involved decided to open-source some components.
The plugin appears to be a standard MelonLoader plugin with binaries, so expect a large number of skiddies making use of it as awareness spreads.
Will update with more information as events develop.
VidyaSEC 