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High

pgjdbc Client Allows Fallback to Insecure Authentication Despite channelBinding=require Configuration

  • Disclosed: 11.06.2025
  • Updated: 11.10.2026 13:20

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

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) org.postgresql:postgresql >= 42.7.4, < 42.7.7 42.7.7

References

CVSS score 8.2/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Weakness (CWE)
CWE-287
Platform
Java / Kotlin (Maven)
Package
org.postgresql:postgresql
Disclosed
11.06.2025
Updated
11.10.2026 13:20

Sources and licenses

OSV / GitHub Advisory Database - GHSA-hq9p-pm7w-8p54 - CC BY 4.0

Vulnerability history: org.postgresql:postgresql

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (10) in the archive
Total entries
10
First → latest
02.2022 07.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 1
  • High 7
  • Medium 2

Disclosures per year

Severity:
  1. PostgreSQL JDBC Driver: Silent channel-binding authentication downgrade via unsupported certificate algorithms
    High CVE-2026-54291 >= 42.7.4, < 42.7.12 42.7.12
  2. pgjdbc: Unbounded PBKDF2 iterations in SCRAM authentication allows CPU exhaustion DoS
    High · 7.5 CVE-2026-42198 >= 42.2.0, < 42.7.11 42.7.11
  3. pgjdbc Client Allows Fallback to Insecure Authentication Despite channelBinding=require Configuration this entry
    High · 8.2 CVE-2025-49146 >= 42.7.4, < 42.7.7 42.7.7
  4. org.postgresql:postgresql vulnerable to SQL Injection via line comment generation
    Critical · 10.0 CVE-2024-1597 < 42.2.28, >= 42.3.0, < 42.3.9, >= 42.4.0, < 42.4.4, >= 42.5.0, < 42.5.5, >= 42.6.0, < 42.6.1, >= 42.7.0, < 42.7.2 42.2.28, 42.3.9, 42.4.4, 42.5.5, 42.6.1, 42.7.2
  5. PostgreSQL JDBC Driver SQL Injection in ResultSet.refreshRow() with malicious column names
    High · 7.1 CVE-2022-31197 < 42.2.26, >= 42.4.0, < 42.4.1, >= 42.3.0, < 42.3.7 42.2.26, 42.4.1, 42.3.7
  6. Unescaped parameters in the PostgreSQL JDBC driver
    High CVE-2012-1618 < 8.2 8.2
  7. Improper Restriction of XML External Entity Reference
    High · 7.7 CVE-2020-13692 >= 9.4.1212.jre6, < 42.2.13 42.2.13
  8. pgjdbc Does Not Check Class Instantiation when providing Plugin Classes
    High · 7.0 CVE-2022-21724 >= 9.4.1208, < 42.2.25, >= 42.3.0, < 42.3.2 42.2.25, 42.3.2

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