CVE-2019-10130

A vulnerability was found in PostgreSQL versions 11.x up to excluding 11.3,
10.x up to excluding 10.8, 9.6.x up to, excluding 9.6.13, 9.5.x up to,
excluding 9.5.17. PostgreSQL maintains column statistics for tables.
Certain statistics, such as histograms and lists of most common values,
contain values taken from the column. PostgreSQL does not evaluate row
security policies before consulting those statistics during query planning;
an attacker can exploit this to read the most common values of certain
columns. Affected columns are those for which the attacker has SELECT
privilege and for which, in an ordinary query, row-level security prunes
the set of rows visible to the attacker.