CVE-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...

CVE-2026-54291

CVE-2026-54291 affects pgjdbc (OpenJDK PostgreSQL JDBC Driver) in versions 42.7.4–42.7.11. The issue allows a silent downgrade of channelBinding from SCRAM-SHA-256-PLUS to plain SCRAM-SHA-256 when an attacker can intercept TLS and presents a certificate whose signature algorithm lacks a tls-serve...

PostgresSQL JDBC -- Silent channel-binding authentication downgrade via unsupported certificate algorithms

PostgreSQL project reports: 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...

Ubuntu: Security Advisory (USN-2540-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2015 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

USN-2540-1: GnuTLS vulnerabilities

It was discovered that GnuTLS did not perform date and time checks on CA certificates, contrary to expectations. This issue only affected Ubuntu 10.04 LTS. CVE-2014-8155 Nikos Mavrogiannopoulos discovered that GnuTLS incorrectly verified that signature algorithms matched. A remote attacker could...