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HuttenlocherTechnologies
MediumCVSS 6.5Other software

CVE-2026-111438

在 openGauss-server 的 src/common/backend/libpq/hba.cpp 中,复制连接认证存在访问控制绕过。hba_getauthmethod() 在处理 HADR/SW 复制发送方时,不要求 is_node_internal_connection(),直接调用 check_hba_r

在 openGauss-server 的 src/common/backend/libpq/hba.cpp 中,复制连接认证存在访问控制绕过。hba_getauthmethod() 在处理 HADR/SW 复制发送方时,不要求 is_node_internal_connection(),直接调用 check_hba_replication()。check_hba_replication() 仅按 replication 标记做弱匹配,缺少普通 check_hba() 中的远程 trust 禁止等完整校验。因此,非内部网络的 HADR/SW 复制连接可绕过内部连接限制和完整 pg_hba 策略完成认证,进而通过复制协议读取备份与日志数据。 此问题随 HADR 复制发送方绕过内部连接校验进入代码,自 3.0.0 起即存在。受影响版本包括 3.0.x、3.1.x、5.0.x、5.1.0、6.0.x,以及 7.0.0-RC1、7.0.0-RC2、7.0.0-RC3。该问题已在 7.0.0-LTS版本修复,通过要求 HADR/SW 复制发送方必须经过 is_node_internal_connection 校验,使外部复制连接改走普通 check_hba() 并触发禁止远程 trust 策略。修复pr见https://gitcode.com/opengauss/openGauss-server/pull/9757。

Description from the National Vulnerability Database, published by a1a479f7-907b-4ae8-a999-9148cadc9224

What to do: Apply the vendor’s update. The NVD record links to the advisory.

What it means for a small business

If your business uses openGauss-server, install the vendor's update. If you're not sure whether you use it, ask whoever manages your computers.

How likely is an attack? The Exploit Prediction Scoring System, run by FIRST (the global association of security response teams), puts the odds of this one being exploited in the next 30 days at 0.36%, higher than 29% of CVEs. That’s low, but low isn’t zero, and the odds jump the day someone publishes an exploit. Scored October 29, 2026, updated daily.

Check your own setup

  • Website check: reads what your site runs from the outside (WordPress version, plugins it can see, old server software) and matches it against this database.
  • Server check: what your web server says about itself, and whether that version has known flaws.

Part of the Huttenlocher Technologies vulnerability database, refreshed twice a day from CISA and the NVD. The title, category and plain-language guidance are ours; check the linked record before acting on a detail. This is general guidance, not a review of your systems.

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