Red Hat Product Errata RHSA-2026:59277 - Security Advisory Issued: 2026-08-25 Updated: 2026-08-25 RHSA-2026:59277 - Security Advisory Overview Updated Packages Synopsis Important: postgresql-jdbc security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for postgresql-jdbc is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description PostgreSQL is an advanced object-relational database management system. The postgresql-jdbc package includes the .jar files needed for Java programs to access a PostgreSQL database. Security Fix(es): jdbc.postgresql.org: pgjdbc: Client-side Denial of Service via malicious SCRAM-SHA-256 authentication (CVE-2026-42198) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.6 x86_64 Red Hat Enterprise Linux Server - AUS 8.6 x86_64 Fixes BZ - 2463857 - CVE-2026-42198 jdbc.postgresql.org: pgjdbc: Client-side Denial of Service via malicious SCRAM-SHA-256 authentication CVEs CVE-2026-42198 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.6 SRPM postgresql-jdbc-42.2.3-5.el8_6.1.src.rpm SHA-256: f479df1dd31507a807c1acf8d36dafe3d53dec08e40b8024a7303517f31a9123 x86_64 postgresql-jdbc-42.2.3-5.el8_6.1.noarch.rpm SHA-256: 8368217acf6dc6fe6f1b8aa223b5b102005f16b0c7d1a0a7683f6dedb183d398 postgresql-jdbc-javadoc-42.2.3-5.el8_6.1.noarch.rpm SHA-256: 00b99ef34fd6596929df74c85e96015518f5a3b7a3340c8e92c75142513a2b48 Red Hat Enterprise Linux Server - AUS 8.6 SRPM postgresql-jdbc-42.2.3-5.el8_6.1.src.rpm SHA-256: f479df1dd31507a807c1acf8d36dafe3d53dec08e40b8024a7303517f31a9123 x86_64 postgresql-jdbc-42.2.3-5.el8_6.1.noarch.rpm SHA-256: 8368217acf6dc6fe6f1b8aa223b5b102005f16b0c7d1a0a7683f6dedb183d398 postgresql-jdbc-javadoc-42.2.3-5.el8_6.1.noarch.rpm SHA-256: 00b99ef34fd6596929df74c85e96015518f5a3b7a3340c8e92c75142513a2b48 The Red Hat security contact is secalert@redhat.com . More contact details at https://access.redhat.com/security/team/contact/ .