pgproto3 SQL Injection via Protocol Message Size Overflow

CRITICAL 9.8CVE-2024-27304 · GHSA-7jwh-3vrq-q3m8 · GHSA-mrww-27vc-gghv · Published 06/03/2024 · updated 17/06/2026

Package	Affected versions	Patched versions
github.com/jackc/pgproto3 Go	`< 2.3.3`	`2.3.3`
github.com/jackc/pgproto3/v2 Go	`< 2.3.3`	`2.3.3`
github.com/jackc/pgx Go	`≥ 5.0.0, < 5.5.4< 4.18.2all versions`	`5.5.44.18.2`
github.com/jackc/pgx/v4 Go	`< 4.18.2`	`4.18.2`
github.com/jackc/pgx/v5 Go	`≥ 5.0.0, < 5.5.4`	`5.5.4`
pgproto3 jackc	`< 2.3.3`	`2.3.3`
pgx jackc	`≥ 5.0.0, < 5.5.4< 4.18.2`	`5.5.44.18.2`

Description

Impact

SQL injection can occur if an attacker can cause a single query or bind message to exceed 4 GB in size. An integer overflow in the calculated message size can cause the one large message to be sent as multiple messages under the attacker's control.

Patches

The problem is resolved in v2.3.3

Workarounds

Reject user input large enough to cause a single query or bind message to exceed 4 GB in size.

NVD description

pgx is a PostgreSQL driver and toolkit for Go. SQL injection can occur if an attacker can cause a single query or bind message to exceed 4 GB in size. An integer overflow in the calculated message size can cause the one large message to be sent as multiple messages under the attacker's control. The problem is resolved in v4.18.2 and v5.5.4. As a workaround, reject user input large enough to cause a single query or bind message to exceed 4 GB in size.