Input Validation Flaw in PostgreSQL Implementation by Jackc
CVE-2026-4427

7.5HIGH

Key Information:

Vendor: Red Hat
Status: Assisted Installer For Red Hat Openshift Container Platform 2; Multicluster Engine For Kubernetes; Multicluster Global Hub; Red Hat Advanced Cluster Management For Kubernetes 2
Vendor: CVE Published:; 19 March 2026

What is CVE-2026-4427?

An input validation flaw exists in the pgproto3 library, which affects PostgreSQL implementations. A malicious PostgreSQL server can exploit this vulnerability by sending a DataRow message containing a negative field length. This could lead to a denial of service as the system may panic due to slice bounds being out of range, disrupting service availability. Users and administrators utilizing pgproto3 in their applications should take precautionary measures to mitigate this risk.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch