{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-14178",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-14178",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-30T13:56:16.846Z",
    "updatedAt": "2026-06-30T14:40:10.603Z",
    "importedAt": "2026-10-24T01:57:55.771Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "openGauss存在非法内存访问导致DoS漏洞",
      "summary": "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。",
      "affected": [
        {
          "vendor": "openGauss-server",
          "product": "openGauss-server-7.0.0-RC2",
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC2",
          "platforms": [
            "openEuler",
            "Centos"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "openGauss-server-7.0.0-RC2",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "openGauss-server",
          "product": "openGauss-server-7.0.0-RC1",
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC1",
          "platforms": [
            "openEuler",
            "Centos"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "openGauss-server-7.0.0-RC1",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "openGauss-server",
          "product": "openGauss-server-7.0.0-RC3",
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC3",
          "platforms": [
            "openEuler Centos"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "openGauss-server-7.0.0-RC3",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  }
}