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vuln-cve/data/2026/14xxx/CVE-2026-14178.json
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{
"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。",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"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"
}
},
"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"
}
}
]
}
}