OMERO 5.2.8 will be released on Thursday 23rd March and all sysadmins should schedule upgrading their servers as soon as possible for security reasons.
On Thursday 23rd March we will be releasing a security update for OMERO servers. This release will include three severe vulnerabilities and all sysadmins should schedule upgrading their servers to the new 5.2.8 version as soon as possible.
— March 16, 2017