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.

INFO

Published Date :

2026-03-19T14:24:02.864Z

Last Modified :

2026-03-19T16:04:37.322Z

Source :

redhat
AFFECTED PRODUCTS

The following products are affected by CVE-2026-4427 vulnerability.

Vendors Products
Redhat
  • Acm
  • Advanced Cluster Security
  • Assisted Installer
  • Enterprise Linux
  • Multicluster Engine
  • Multicluster Globalhub
  • Openshift
  • Openshift Ai
  • Openshift Cluster Manager Cli
  • Openshift Service On Aws
  • Quay
  • Trusted Artifact Signer
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-4427.

URL Resource
https://access.redhat.com/security/cve/CVE-2026-4427 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2448626 cve-icon cve-icon
https://github.com/golang/vulndb/issues/4518 cve-icon cve-icon
https://github.com/jackc/pgproto3 cve-icon cve-icon
https://github.com/jackc/pgx/issues/2507 cve-icon cve-icon
https://securityinfinity.com/research/memory-safety-vulnerabilities-in-go-postgresql-wire-protocol-parsers-pgproto3-pgx cve-icon cve-icon
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