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## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-jqcq-xjh3-6g23.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 slice bounds out of range panic.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-jqcq-xjh3-6g23.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 slice bounds out of range panic.
05 / REFERENCES
Further evidence
- https://access.redhat.com/security/cve/CVE-2026-4427
- https://bugzilla.redhat.com/show_bug.cgi?id=2448626
- https://github.com/golang/vulndb/issues/4518
- https://github.com/jackc/pgproto3
- https://github.com/jackc/pgx/issues/2507
- https://nvd.nist.gov/vuln/detail/CVE-2026-4427
- https://securityinfinity.com/research/memory-safety-vulnerabilities-in-go-postgresql-wire-protocol-parsers-pgproto3-pgx