CVE-2026-111438

{
  "id": "CVE-2026-111438",
  "sourceIdentifier": "a1a479f7-907b-4ae8-a999-9148cadc9224",
  "published": "2026-10-19T09:17:07.173",
  "lastModified": "2026-10-19T20:56:36.663",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "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。"
    }
  ],
  "affected": [
    {
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
      "affectedData": [
        {
          "vendor": "openGauss-server",
          "product": "openGauss-server",
          "defaultStatus": "unaffected",
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0%20(LTS)",
          "platforms": [
            "openEuler",
            "Centos"
          ],
          "versions": [
            {
              "version": "7.0.0-LTS",
              "status": "unaffected"
            },
            {
              "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",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 5.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-19T17:22:00.742739Z",
          "id": "CVE-2026-111438",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-288"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://gitcode.com/opengauss/openGauss-server/pull/9757",
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224"
    }
  ]
}