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CVE-2025-49146— pgjdbc Client Allows Fallback to Insecure Authentication Despite channelBinding=require Configuration

Quick assessment

Affected
pgjdbc pgjdbc
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

pgJDBC是pgJDBC开源的一个PostgreSQL驱动。 pgJDBC 42.7.4至42.7.7版本存在授权问题漏洞，该漏洞源于通道绑定配置不当，可能导致中间人攻击。

CVSS 8.2 · High EPSS 0.48% · P39

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2025-49146

Vulnerability Information
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Vulnerability Title
pgjdbc Client Allows Fallback to Insecure Authentication Despite channelBinding=require Configuration
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
pgJDBC 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pgJDBC是pgJDBC开源的一个PostgreSQL驱动。 pgJDBC 42.7.4至42.7.7版本存在授权问题漏洞，该漏洞源于通道绑定配置不当，可能导致中间人攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
pgjdbc pgjdbc >= 42.7.4, < 42.7.7 -

II. Public POCs for CVE-2025-49146

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 10901 chars
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III. Intelligence Information for CVE-2025-49146

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IV. Related Vulnerabilities

Same product: pgjdbc
Same vendor: pgjdbc
Same weakness: CWE-287

V. Comments for CVE-2025-49146

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