3.01.15 has been released and contains a fix for a verified security risk.
The Item fixed is REP-8323.
Although this has been verified as a risk, the circumstances under which an attack can be successful are extremely specific. The existing code, 3.01.14 and prior, performs filtering of querystring parameters making exploitation difficult. However, to guarantee the security of your site, upgrading to 3.01.15 is highly recommended.
There are no functional or data changes in 3.01.15. It only includes a code fix for this one item.