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

> CVE-2025-49146: pgjdbc Client Allows Fallback to Insecure Authentication Despite channelBinding=require Configuration. CVSS 8.2 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-49146
Last updated: 2026-06-17T09:30:49Z

- Published: 2025-06-11 14:32 UTC · Updated: 2026-06-17 09:30 UTC · Assigner: GitHub\_M
- CVSS: 8.2 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- EPSS: 0.49%, 42th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-287

## 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.

## Affected vendors and products

- pgjdbc: pgjdbc

## Tracked companies

- [Bitbucket](https://rewindex.com/company/bitbucket.md)
- [Confluence](https://rewindex.com/company/confluence.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-49146)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-49146)
- [https://github.com/pgjdbc/pgjdbc/commit/9217ed16cb2918ab1b6b9258ae97e6ede244d8a0](https://github.com/pgjdbc/pgjdbc/commit/9217ed16cb2918ab1b6b9258ae97e6ede244d8a0)
- [https://github.com/pgjdbc/pgjdbc/security/advisories/GHSA-hq9p-pm7w-8p54](https://github.com/pgjdbc/pgjdbc/security/advisories/GHSA-hq9p-pm7w-8p54)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-49146 · Markdown: https://rewindex.com/cve/CVE-2025-49146.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-49146 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:15:19.968Z