postgresql is vulnerable to man-in-the-middle attacks. A man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first created when the server is configured to use trust authentication with a ‘clientcert’ requirement or to utilize ‘cert’ authentication.
bugzilla.redhat.com/show_bug.cgi?id=2022666
git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=28e24125541545483093819efae9bca603441951
github.com/postgres/postgres/commit/28e24125541545483093819efae9bca603441951
secdb.alpinelinux.org/edge/community.yaml
secdb.alpinelinux.org/edge/main.yaml
secdb.alpinelinux.org/v3.11/main.yaml
secdb.alpinelinux.org/v3.12/main.yaml
secdb.alpinelinux.org/v3.13/main.yaml
secdb.alpinelinux.org/v3.14/main.yaml
www.postgresql.org/support/security/CVE-2021-23214/