{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-111438","assignerOrgId":"a1a479f7-907b-4ae8-a999-9148cadc9224","state":"PUBLISHED","assignerShortName":"openGauss","dateReserved":"2026-10-16T03:04:53.420Z","datePublished":"2026-10-19T08:08:03.265Z","dateUpdated":"2026-10-19T17:22:23.532Z"},"containers":{"cna":{"providerMetadata":{"orgId":"a1a479f7-907b-4ae8-a999-9148cadc9224","shortName":"openGauss","dateUpdated":"2026-10-19T08:08:03.265Z"},"title":"check_hba_replication 认证与访问控制绕过","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-288","description":"CWE-288 Authentication bypass using an alternate path or channel","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-115","descriptions":[{"lang":"en","value":"CAPEC-115 Authentication Bypass"}]}],"affected":[{"vendor":"openGauss-server","product":"openGauss-server","platforms":["openEuler","Centos"],"collectionURL":"https://opengauss.org/zh/download/archive/?version=7.0.0%20(LTS)","versions":[{"status":"unaffected","version":"7.0.0-LTS"},{"status":"affected","version":"3.0.0-3.0.5"},{"status":"affected","version":"3.1.0-3.1.1"},{"status":"affected","version":"5.0.0-RC1"},{"status":"affected","version":"5.0.0-5.0.3"},{"status":"affected","version":"6.0.0-RC1"},{"status":"affected","version":"6.0.0-6.0.6"},{"status":"affected","version":"7.0.0-RC1, 7.0.0-RC2, 7.0.0-RC3"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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。","supportingMedia":[{"type":"text/html","base64":false,"value":"<div><table><tbody><tr><td>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。<br><br>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。</td></tr></tbody></table></div>"}]}],"references":[{"url":"https://gitcode.com/opengauss/openGauss-server/pull/9757"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE","baseSeverity":"MEDIUM","baseScore":6.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N"}}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-19T17:22:00.742739Z","id":"CVE-2026-111438","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-19T17:22:23.532Z"}}]}}