GHSA-jqcq-xjh3-6g23: Denial of service in github.com/jackc/pgproto3/v2

March 18, 2026

The DataRow.Decode function fails to properly validate field lengths. A malicious or compromised PostgreSQL server can send a DataRow message with a negative field length, causing a slice bounds out of range panic.

References

github.com/advisories/GHSA-jqcq-xjh3-6g23
github.com/golang/vulndb/issues/4518
github.com/jackc/pgproto3
github.com/jackc/pgx/issues/2507
securityinfinity.com/research/memory-safety-vulnerabilities-in-go-postgresql-wire-protocol-parsers-pgproto3-pgx

Code Behaviors & Features

Detect and mitigate GHSA-jqcq-xjh3-6g23 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →