Medium · CVSS 6.5CVE-2026-111438

check_hba_replication 认证与访问控制绕过CVE-2026-111438

Answer in brief

CVE-2026-111438 records a Medium severity (CVSS 6.5) vulnerability in check_hba_replication 认证与访问控制绕过. The current sources do not mark it as known exploited. The current feed maps openGauss-server/openGauss-server (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 19, 2026Updated Oct 19, 2026Source checked Oct 19, 2026First seen by HOL Oct 19, 2026Material review Oct 19, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps openGauss-server/openGauss-server (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
openGauss-server/openGauss-servergeneric	3.0.0-3.0.5 \|\| 3.1.0-3.1.1 \|\| 5.0.0-RC1 \|\| 5.0.0-5.0.3 \|\| 6.0.0-RC1 \|\| 6.0.0-6.0.6 \|\| 7.0.0-RC1 7.0.0-RC2 7.0.0-RC3	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for openGauss-server/openGauss-server.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 19, 2026

Sources and claim methodology

Source referencegitcode.com

Upstream source description

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。

Quoted source text, attributed separately from HOL analysis.

pg_read_binary_file_blocks 缺少初始用户权限校验，普通用户可读取 relation 文件块Same opengauss-server/opengauss-server package