Gatling 0.15 has been released. The port is still stuck at version 0.13 which includes security and file descriptor reuse after free bugs. Gatling has to be build against the latest libowfat version to fix all publicly known security vulnerabilities.
A commit references this bug: Author: lx Date: Mon Feb 13 20:24:17 UTC 2017 New revision: 434051 URL: https://svnweb.freebsd.org/changeset/ports/434051 Log: Update to 0.15, fixing security issues. PR: 217064 Reported by: Jan Bramkamp MFH: 2017Q1 Security: File descriptor leakage and use after free bugs Changes: head/www/gatling/Makefile head/www/gatling/distinfo head/www/gatling/files/patch-GNUmakefile
Committed, thanks!