Is github.com/jackc/pgx/v4 safe?

GHSA-m7wr-2xf7-cm9p

SQL injection can occur when all of the following conditions are met:

• The non-default simple protocol is used.
• A placeholder for a numeric value must be immediately preceded by a minus.
• There must be a second placeholder for a string value after the first placeholder; both

must be on the same line.

• Both parameter values must be user-controlled.

e.g.

Simple mode must be enabled:

// connection string includes "prefer_simple_protocol=true"
// or
// directly enabled in code
config.ConnConfig.PreferSimpleProtocol = true

Parameterized query:

SELECT * FROM example WHERE result=-$1 OR name=$2;

Parameter values:

$1 => -42 $2 => "foo\n 1 AND 1=0 UNION SELECT FROM secrets; --"

Resulting query after preparation:

SELECT * FROM example WHERE result=--42 OR name= 'foo
1 AND 1=0 UNION SELECT * FROM secrets; --';

The problem is resolved in v4.18.2.

Do not use the simple protocol or do not place a minus directly before a placeholder.