PostgreSQL JDBC Driver: Silent channel-binding authentication downgrade via unsupported certificate algorithms

Impact channelBinding=require connections can be silently downgraded from SCRAM-SHA-256-PLUS with channel binding to plain SCRAM-SHA-256 without it, losing the man-in-the-middle protection the setting is meant to guarantee. An attacker who can intercept the TLS connection triggers the downgrade...

CVE-2026-54291

A flaw was found in pgjdbc, an open-source PostgreSQL JDBC Driver. A remote attacker who can intercept a TLS Transport Layer Security connection can silently downgrade connections configured to require channel binding from SCRAM-SHA-256-PLUS to plain SCRAM-SHA-256. This downgrade bypasses the...

CVE-2026-53712 SCRAM: Silent channel-binding authentication downgrade via unsupported certificate algorithms

SCRAM Salted Challenge Response Authentication Mechanism is part of the family of Simple Authentication and Security Layer SASL, RFC 4422 authentication mechanisms. Prior to 3.3, a flaw in com.ongres.scram:scram-client and com.ongres.scram:scram-common allows an attacker capable of a TLS...

CVE-2026-53712 SCRAM: Silent channel-binding authentication downgrade via unsupported certificate algorithms

SCRAM Salted Challenge Response Authentication Mechanism is part of the family of Simple Authentication and Security Layer SASL, RFC 4422 authentication mechanisms. Prior to 3.3, a flaw in com.ongres.scram:scram-client and com.ongres.scram:scram-common allows an attacker capable of a TLS...

CVE-2026-53712

SCRAM Salted Challenge Response Authentication Mechanism is part of the family of Simple Authentication and Security Layer SASL, RFC 4422 authentication mechanisms. Prior to 3.3, a flaw in com.ongres.scram:scram-client and com.ongres.scram:scram-common allows an attacker capable of a TLS...

CVE-2026-53712

The CVE describes a vulnerability in the OnGres SCRAM library (com.ongres.scram:scram-client and scram-common) where, prior to version 3.3, a TLS MITM can silently downgrade SCRAM-SHA-256-PLUS with channel binding to SCRAM-SHA-256 without channel binding when an X.509 certificate uses modern sign...

CVE-2026-53712: Not Failing Securely

SCRAM Salted Challenge Response Authentication Mechanism is part of the family of Simple Authentication and Security Layer SASL, RFC 4422 authentication mechanisms. Prior to 3.3, a flaw in com.ongres.scram:scram-client and com.ongres.scram:scram-common allows an attacker capable of a TLS...

ROS-20260713-73-0045

The vulnerability of the mbufgetbytes and mbufgetchars functions in PostgreSQL’s PgBouncer connection pool lies in integer overflow. Exploiting this vulnerability could allow a malicious actor to cause a service failure by sending a specially crafted authentication packet called SCRAM...

BIT-POSTGRESQL-JDBC-DRIVER-2026-54291 Silent channel-binding authentication downgrade via unsupported certificate algorithms

pgjdbc is an open source postgresql JDBC Driver. In releases 42.7.4 through 42.7.11, channelBinding=require connections can be silently downgraded from SCRAM-SHA-256-PLUS with channel binding to plain SCRAM-SHA-256 without it, losing the man-in-the-middle protection the setting is meant to...

SUSE CVE-2026-54291

pgjdbc is an open source postgresql JDBC Driver. In releases 42.7.4 through 42.7.11, channelBinding=require connections can be silently downgraded from SCRAM-SHA-256-PLUS with channel binding to plain SCRAM-SHA-256 without it, losing the man-in-the-middle protection the setting is meant to...

CVE-2026-54291

pgjdbc is an open source postgresql JDBC Driver. In releases 42.7.4 through 42.7.11, channelBinding=require connections can be silently downgraded from SCRAM-SHA-256-PLUS with channel binding to plain SCRAM-SHA-256 without it, losing the man-in-the-middle protection the setting is meant to...

UBUNTU-CVE-2026-54291

pgjdbc is an open source postgresql JDBC Driver. In releases 42.7.4 through 42.7.11, channelBinding=require connections can be silently downgraded from SCRAM-SHA-256-PLUS with channel binding to plain SCRAM-SHA-256 without it, losing the man-in-the-middle protection the setting is meant to...

CVE-2026-54291

pgjdbc is an open source postgresql JDBC Driver. In releases 42.7.4 through 42.7.11, channelBinding=require connections can be silently downgraded from SCRAM-SHA-256-PLUS with channel binding to plain SCRAM-SHA-256 without it, losing the man-in-the-middle protection the setting is meant to...

CVE-2026-54291

pgjdbc is an open source postgresql JDBC Driver. In releases 42.7.4 through 42.7.11, channelBinding=require connections can be silently downgraded from SCRAM-SHA-256-PLUS with channel binding to plain SCRAM-SHA-256 without it, losing the man-in-the-middle protection the setting is meant to...

CVE-2026-54291: Not Failing Securely

pgjdbc is an open source postgresql JDBC Driver. In releases 42.7.4 through 42.7.11, channelBinding=require connections can be silently downgraded from SCRAM-SHA-256-PLUS with channel binding to plain SCRAM-SHA-256 without it, losing the man-in-the-middle protection the setting is meant to...

openSUSE 16: ansible-rmt-server / rmt-server / rmt-server-config / etc (openSUSE-SU-2026:21225-1)

The remote openSUSE 16 host has packages installed that are affected by a vulnerability as referenced in the openSUSE- SU-2026:21225-1 advisory. This update for rmt-server fixes the following issue Update to 3.0.0: - CVE-2026-42256: net-imap: hostile server can perform a DoS on client...

PT-2026-54841

Name of the Vulnerable Software and Affected Versions pgjdbc versions 42.7.4 through 42.7.11 Description Connections using channelBinding=require can be silently downgraded from SCRAM-SHA-256-PLUS with channel binding to plain SCRAM-SHA-256. This results in the loss of man-in-the-middle protectio...

AlmaLinux 9 : postgresql-jdbc (ALSA-2026:22304)

The remote AlmaLinux 9 host has a package installed that is affected by a vulnerability as referenced in the ALSA-2026:22304 advisory. jdbc.postgresql.org: pgjdbc: Client-side Denial of Service via malicious SCRAM-SHA-256 authentication CVE-2026-42198 Tenable has extracted the preceding descripti...

OnGres SCRAM silent channel-binding authentication downgrade via unsupported certificate algorithms

Summary A flaw in com.ongres.scram:scram-client allows an attacker capable of performing a TLS man-in-the-middle MITM attack to silently downgrade a connection from SCRAM-SHA-256-PLUS with channel binding to standard SCRAM-SHA-256 without channel binding, bypassing strict client-side enforcement...

Not Failing Securely ('Failing Open')

Overview Affected versions of this package are vulnerable to Not Failing Securely 'Failing Open' in the TlsServerEndpoint process when a server presents an X.509 certificate using a modern signature algorithm lacking traditional naming structures. An attacker can bypass strict client-side...