CVE-2026-54291

描述

pgjdbc is an open source postgresql JDBC Driver. In releases 42.7.4 through 42.7.11, channelBinding=require connections can be silently downgraded from SCRAM-SHA-256-PLUS with channel binding to plain SCRAM-SHA-256 without it, losing the man-in-the-middle protection the setting is meant to guarantee. An attacker who can intercept the TLS connection can trigger the downgrade with a certificate whose signature algorithm has no tls-server-end-point channel-binding hash, because the bundled com.ongres.scram:scram-client returns an empty byte array instead of failing and pgJDBC ScramAuthenticator checks only that the server advertised a PLUS mechanism, without rejecting the empty binding or checking that the negotiated mechanism uses channel binding. This issue is fixed in version 42.7.12.

如何修補 CVE-2026-54291

要修補 CVE-2026-54291,請將受影響套件升級到下列已修補版本。

• —升級至 42.7.12 或更新版本

CVE-2026-54291 正在被利用嗎?

低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• >= 42.7.4, < 42.7.12

CVSS 分數

參考連結(4)

• WEBgithub.com/ongres/scram/releases/tag/3.3
• WEBgithub.com/pgjdbc/pgjdbc/commit/77df98e4e66c12936ded3478a0954f6f580bad99
• WEBgithub.com/pgjdbc/pgjdbc/security/advisories/GHSA-j92g-9f8w-j867
• WEBnvd.nist.gov/vuln/detail/CVE-2026-54291