On May 4th, the Eclipse Foundation (EF) Security Team received a notification from researchers at Koi Security regarding a potential issue in the Eclipse Open VSX marketplace extension publication process. The EF Security Team immediately contacted the Eclipse Open VSX team, and upon confirming the issue, work on a fix was promptly initiated.
Following several iterations and thorough testing (necessary due to the intrusive nature of the change to the extension build process) the fix was successfully deployed on June 24th.