CVE-2026-4427 — Improper Validation of Array Index in Jackc Pgproto3 V2

Duplicate Advisory: pgproto3: Negative field length panics in DataRow.Decode ## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-jqcq-xjh3-6g23. This link is maintained to preserve external references. ## Original Description A flaw was found in pgproto3. A malicious or compromised PostgreSQL server can exploit this by sending a DataRow message with a negative field length. This input validation vulnerability can lead to a denial of service (DoS) due to a …