{"id":"CVE-2026-111438","revision":"2b80f4cbac5b46a1a30c987223fb3f14","records":[{"revision":"2b80f4cbac5b46a1a30c987223fb3f14","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-111438","aliases":[],"title":"check_hba_replication 认证与访问控制绕过","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。\n\n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。","state":0,"publishedAt":"2026-10-19T08:08:03.265+00:00","modifiedAt":"2026-10-19T17:22:23.532+00:00","affected":[{"ecosystem":"https://opengauss.org/zh/download/archive/?version=7.0.0%20(LTS)","name":"openGauss-server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"openGauss-server\",\n                    \"product\": \"openGauss-server\",\n                    \"platforms\": [\n                        \"openEuler\",\n                        \"Centos\"\n                    ],\n                    \"collectionURL\": \"https://opengauss.org/zh/download/archive/?version=7.0.0%20(LTS)\",\n                    \"versions\": [\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"7.0.0-LTS\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"3.0.0-3.0.5\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"3.1.0-3.1.1\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.0.0-RC1\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.0.0-5.0.3\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"6.0.0-RC1\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"6.0.0-6.0.6\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"7.0.0-RC1, 7.0.0-RC2, 7.0.0-RC3\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://gitcode.com/opengauss/openGauss-server/pull/9757"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111438","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111438","identifiers":["CVE-2026-111438"]},"retained":false,"historicalAffected":[]}],"coverage":[]}