PgBouncer 1.6.1 bugfix release is out, with one critical security fix
for setups that have auth_user functionality enabled:
https://pgbouncer.github.io/2015/09/pgbouncer-1-6-1/
It does not affect setups that do not use auth_user.
About
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PgBouncer is lightweight connection pooler for PostgreSQL.
Homepage: https://pgbouncer.github.io/
Download: https://pgbouncer.github.io/downloads/