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  "document": {
    "aggregate_severity": {
      "text": "Low"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
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    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      },
      {
        "category": "details",
        "text": "* SECURITY UPDATE: integer wraparound on 32-bit systems in palloc() callers\n     - debian/patches/CVE-2026-6473.patch: integer wraparound on 32-bit systems in palloc() callers\n     - CVE-2026-6473\n   * SECURITY UPDATE: format-string memory disclosure in timeofday() via crafted timezones\n     - debian/patches/CVE-2026-6474.patch: format-string memory disclosure in timeofday() via crafted timezones\n     - CVE-2026-6474\n   * SECURITY UPDATE: path traversal in pg_rewind allows origin superuser to overwrite local files\n     - debian/patches/CVE-2026-6475.patch: path traversal in pg_rewind allows origin superuser to overwrite local files\n     - CVE-2026-6475\n   * SECURITY UPDATE: stack buffer overrun in libpq PQfn() (lo_read/lo_lseek64/lo_tell64)\n     - debian/patches/CVE-2026-6477.patch: stack buffer overrun in libpq PQfn() (lo_read/lo_lseek64/lo_tell64)\n     - CVE-2026-6477\n   * SECURITY UPDATE: covert timing channel in MD5 password comparison\n     - debian/patches/CVE-2026-6478.patch: covert timing channel in MD5 password comparison\n     - CVE-2026-6478\n   * SECURITY UPDATE: SQL injection and stack buffer overruns in refint contrib module\n     - debian/patches/CVE-2026-6637.patch: SQL injection and stack buffer overruns in refint contrib module\n     - CVE-2026-6637",
        "title": "Details"
      }
    ],
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      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
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    "references": [
      {
        "category": "self",
        "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1779389543",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1779389543"
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        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/debian10els/advisories/2026/clsa-2026_1779389543.json"
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      "current_release_date": "2026-05-21T18:53:39Z",
      "generator": {
        "date": "2026-05-21T18:53:39Z",
        "engine": {
          "name": "pyCSAF"
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      "id": "CLSA-2026:1779389543",
      "initial_release_date": "2026-05-21T18:53:39Z",
      "revision_history": [
        {
          "date": "2026-05-21T18:53:39Z",
          "number": "1",
          "summary": "Initial version"
        }
      ],
      "status": "final",
      "version": "1"
    },
    "title": "Fix of 6 CVEs"
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        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-6473"
        },
        {
          "category": "external",
          "summary": "https://www.postgresql.org/support/security/CVE-2026-6473/",
          "url": "https://www.postgresql.org/support/security/CVE-2026-6473/"
        }
      ],
      "release_date": "2026-05-14T14:16:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-05-21T18:52:25.464143Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1779389543",
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            "Debian-10:postgresql-server-dev-11-0:11.22-0+deb10u2+tuxcare.els2.amd64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1779389543"
        },
        {
          "category": "none_available",
          "date": "2026-05-14T14:16:00Z",
          "details": "Affected",
          "product_ids": [
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            "Debian-10:postgresql-plpython3-11-0:11.22-0+deb10u2+tuxcare.els1.amd64",
            "Debian-10:postgresql-pltcl-11-0:11.22-0+deb10u2+tuxcare.els1.amd64",
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ]
    },
    {
      "cve": "CVE-2026-6474",
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        "id": "CWE-134",
        "name": "Use of Externally-Controlled Format String"
      },
      "notes": [
        {
          "category": "description",
          "text": "Externally-controlled format string in PostgreSQL timeofday() function allows an attacker to retrieve portions of server memory, via crafted timezone zones.  Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.",
          "title": "Vulnerability description"
        }
      ],
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          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-6474"
        },
        {
          "category": "external",
          "summary": "https://www.postgresql.org/support/security/CVE-2026-6474/",
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        {
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            "Debian-10:libecpg6-0:11.22-0+deb10u2+tuxcare.els2.amd64",
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          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1779389543"
        },
        {
          "category": "none_available",
          "date": "2026-05-14T14:16:00Z",
          "details": "Affected",
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        "id": "CWE-242",
        "name": "Use of Inherently Dangerous Function"
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        {
          "category": "description",
          "text": "Use of inherently dangerous function PQfn(..., result_is_int=0, ...) in PostgreSQL libpq lo_export(), lo_read(), lo_lseek64(), and lo_tell64() functions allows the server superuser to overwrite a client stack buffer with an arbitrarily-large response.  Like gets(), PQfn(..., result_is_int=0, ...) stores arbitrary-length, server-determined data into a buffer of unspecified size.  Because both the \\lo_export command in psql and pg_dump call lo_read(), the server superuser can overwrite pg_dump or psql stack memory.  Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.",
          "title": "Vulnerability description"
        }
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          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-6477"
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          "category": "external",
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          "date": "2026-05-21T18:52:25.464143Z",
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        },
        {
          "category": "none_available",
          "date": "2026-05-14T14:16:00Z",
          "details": "Affected",
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            "Debian-10:postgresql-plpython3-11-0:11.22-0+deb10u2+tuxcare.els1.amd64",
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      "threats": [
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          "category": "impact",
          "details": "Low"
        }
      ]
    },
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      "cve": "CVE-2026-6478",
      "cwe": {
        "id": "CWE-385",
        "name": "Covert Timing Channel"
      },
      "notes": [
        {
          "category": "description",
          "text": "Covert timing channel in comparison of MD5-hashed password in PostgreSQL authentication allows an attacker to recover user credentials sufficient to authenticate.  This does not affect scram-sha-256 passwords, the default in all supported releases.  However, current databases may have MD5-hashed passwords originating in upgrades from PostgreSQL 13 or earlier.  Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.",
          "title": "Vulnerability description"
        }
      ],
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        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-6478"
        },
        {
          "category": "external",
          "summary": "https://www.postgresql.org/support/security/CVE-2026-6478/",
          "url": "https://www.postgresql.org/support/security/CVE-2026-6478/"
        }
      ],
      "release_date": "2026-05-14T14:16:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-05-21T18:52:25.464143Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1779389543",
          "product_ids": [
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            "Debian-10:postgresql-server-dev-11-0:11.22-0+deb10u2+tuxcare.els2.amd64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1779389543"
        },
        {
          "category": "none_available",
          "date": "2026-05-14T14:16:00Z",
          "details": "Affected",
          "product_ids": [
            "Debian-10:libecpg-compat3-0:11.22-0+deb10u2+tuxcare.els1.amd64",
            "Debian-10:libecpg-dev-0:11.22-0+deb10u2+tuxcare.els1.amd64",
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            "Debian-10:postgresql-plpython3-11-0:11.22-0+deb10u2+tuxcare.els1.amd64",
            "Debian-10:postgresql-pltcl-11-0:11.22-0+deb10u2+tuxcare.els1.amd64",
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ]
    },
    {
      "cve": "CVE-2026-6475",
      "cwe": {
        "id": "CWE-61",
        "name": "UNIX Symbolic Link (Symlink) Following"
      },
      "notes": [
        {
          "category": "description",
          "text": "Symlink following in PostgreSQL pg_basebackup plain format and in pg_rewind allows an origin superuser to overwrite local files, e.g. /var/lib/postgres/.bashrc, that hijack the operating system account.  It will remain the case that starting the server after these commands implicitly trusts the origin superuser, due to features like shared_preload_libraries.  Hence, the attack has practical implications only if one takes relevant action between these commands and server start, like moving the files to a different VM or snapshotting the VM.  Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-6475"
        },
        {
          "category": "external",
          "summary": "https://www.postgresql.org/support/security/CVE-2026-6475/",
          "url": "https://www.postgresql.org/support/security/CVE-2026-6475/"
        }
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            "Debian-10:postgresql-server-dev-11-0:11.22-0+deb10u2+tuxcare.els2.amd64"
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          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1779389543"
        },
        {
          "category": "none_available",
          "date": "2026-05-14T14:16:00Z",
          "details": "Affected",
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ]
    }
  ]
}