{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-14178",
        "assignerOrgId": "a1a479f7-907b-4ae8-a999-9148cadc9224",
        "state": "PUBLISHED",
        "assignerShortName": "openGauss",
        "dateReserved": "2026-06-30T07:37:54.949Z",
        "datePublished": "2026-06-30T13:56:16.846Z",
        "dateUpdated": "2026-06-30T14:40:10.603Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "a1a479f7-907b-4ae8-a999-9148cadc9224",
                "shortName": "openGauss",
                "dateUpdated": "2026-06-30T13:56:16.846Z"
            },
            "title": "openGauss存在非法内存访问导致DoS漏洞",
            "datePublic": "2026-06-30T07:53:00.000Z",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-416",
                            "description": "CWE-416 Use after free",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-469",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-469 HTTP DoS"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "openGauss-server",
                    "product": "openGauss-server-7.0.0-RC2",
                    "platforms": [
                        "openEuler",
                        "Centos"
                    ],
                    "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC2",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "openGauss-server-7.0.0-RC2"
                        }
                    ],
                    "defaultStatus": "affected"
                },
                {
                    "vendor": "openGauss-server",
                    "product": "openGauss-server-7.0.0-RC1",
                    "platforms": [
                        "openEuler",
                        "Centos"
                    ],
                    "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC1",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "openGauss-server-7.0.0-RC1"
                        }
                    ],
                    "defaultStatus": "affected"
                },
                {
                    "vendor": "openGauss-server",
                    "product": "openGauss-server-7.0.0-RC3",
                    "platforms": [
                        "openEuler Centos"
                    ],
                    "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC3",
                    "versions": [
                        {
                            "status": "unaffected",
                            "version": "openGauss-server-7.0.0-RC3"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "openGauss 在处理带 NLS 参数的 to_timestamp 调用时，to_timestamp_with_fmt_nls() 会将 nls_fmt_str 保存到 u_sess->parser_cxt.nls_fmt_str。在 seqscan + sort 执行路径下，该字符串原本被分配在 SeqScan 的表达式上下文中；当 SeqScan 完成后，该内存上下文会被 reset，但后续结果输出阶段 timestamp_out() 仍会通过 CheckNlsFormat() 访问 u_sess->parser_cxt.nls_fmt_str，导致访问已释放内存。攻击者在具备数据库 SQL 执行权限的情况下，可构造特定 to_timestamp(..., ..., nlsparam) 查询触发 heap-use-after-free。在 ASan/Memcheck 环境下表现为数据库服务退出；在实际运行环境中可能造成后端进程异常退出，影响数据库服务可用性，形成拒绝服务风险。该问题在openGauss-server-7.0.0-RC1版本和openGauss-server-7.0.0-RC2版本存在，目前已在openGauss-server-7.0.0-RC3版本修复。由于\nopenGauss-server-7.0.0-RC1版本和openGauss-server-7.0.0-RC2均为创新版本，不会发布针对性补丁包，涉及版本升级至\nopenGauss-server-7.0.0-RC3或更新版本即可。",
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                            "value": " openGauss 在处理带 NLS 参数的 to_timestamp 调用时，to_timestamp_with_fmt_nls() 会将 nls_fmt_str 保存到 u_sess->parser_cxt.nls_fmt_str。在 seqscan + sort 执行路径下，该字符串原本被分配在 SeqScan 的表达式上下文中；当 SeqScan 完成后，该内存上下文会被 reset，但后续结果输出阶段 timestamp_out() 仍会通过 CheckNlsFormat() 访问 u_sess->parser_cxt.nls_fmt_str，导致访问已释放内存。攻击者在具备数据库 SQL 执行权限的情况下，可构造特定 to_timestamp(..., ..., nlsparam) 查询触发 heap-use-after-free。在 ASan/Memcheck 环境下表现为数据库服务退出；在实际运行环境中可能造成后端进程异常退出，影响数据库服务可用性，形成拒绝服务风险。该问题在openGauss-server-7.0.0-RC1版本和openGauss-server-7.0.0-RC2版本存在，目前已在openGauss-server-7.0.0-RC3版本修复。由于\nopenGauss-server-7.0.0-RC1版本和openGauss-server-7.0.0-RC2均为创新版本，不会发布针对性补丁包，涉及版本升级至\nopenGauss-server-7.0.0-RC3或更新版本即可。"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://gitcode.com/opengauss/openGauss-server/pull/8877"
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV3_1": {
                        "version": "3.1",
                        "attackVector": "NETWORK",
                        "attackComplexity": "HIGH",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "HIGH",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 5.9,
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
                    }
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "x_generator": {
                "engine": "Vulnogram 1.0.2"
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        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-06-30T14:39:56.155795Z",
                                "id": "CVE-2026-14178",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-06-30T14:40:10.603Z"
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}