CVE-2025-49146
pgjdbc Client Allows Fallback to Insecure Authentication Despite channelBinding=require Configuration
Impact
### Impact 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. ### Patches TBD ### Workarounds Configure `sslMode=verify-full` to prevent MITM attacks. ### References * https://www.postgresql.org/docs/current/sasl-authentication.html#SASL-SCRAM-SHA-256 * https://datatracker.ietf.org/doc/html/rfc7677 * https://datatracker.ietf.org/doc/html/rfc5802
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.postgresql:postgresql | >= 42.7.4, < 42.7.7 | 42.7.7 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Postgresql | Postgresql Jdbc Driver | from 42.7.4 before 42.7.7 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/pgjdbc/pgjdbc/commit/9217ed16cb2918ab1b6b9258ae97e6ede244d8a0
- https://github.com/pgjdbc/pgjdbc/security/advisories/GHSA-hq9p-pm7w-8p54
- https://github.com/advisories/GHSA-hq9p-pm7w-8p54
- https://datatracker.ietf.org/doc/html/rfc5802
- https://datatracker.ietf.org/doc/html/rfc7677
- https://www.postgresql.org/docs/current/sasl-authentication.html#SASL-SCRAM-SHA-256
- https://nvd.nist.gov/vuln/detail/CVE-2025-49146