PostgreSQL JDBC Driver (pgjdbc) Channel Binding Bypass CVE-2025-49146
CVE-2025-49146 Published on June 11, 2025
pgjdbc Client Allows Fallback to Insecure Authentication Despite channelBinding=require Configuration
pgjdbc is an open source postgresql JDBC Driver. From 42.7.4 and until 42.7.7, when the PostgreSQL JDBC driver is configured with channel binding set to required (default value is prefer), the driver would incorrectly allow connections to proceed with authentication methods that do not support channel binding (such as password, MD5, GSS, or SSPI authentication). This could allow a man-in-the-middle attacker to intercept connections that users believed were protected by channel binding requirements. This vulnerability is fixed in 42.7.7.
Vulnerability Analysis
CVE-2025-49146 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
What is an authentification Vulnerability?
When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.
CVE-2025-49146 has been classified to as an authentification vulnerability or weakness.
Products Associated with CVE-2025-49146
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Affected Versions
pgjdbc Version >= 42.7.4, < 42.7.7 is affected by CVE-2025-49146Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.