Dovecot 2.5.3.2 has been released today (April 18), fixing a security issue: https://dovecot.org/pipermail/dovecot-news/2019-April/000407.html
Advisory for the issue: https://www.openwall.com/lists/oss-security/2019/04/18/3
Version 2.3.5.2 pushed to Cauldron. Cheers, Stig
Status: NEW => RESOLVEDResolution: (none) => FIXED
Ubuntu advisory for this from April 23, for reference: https://usn.ubuntu.com/3951-1/