{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "10.11.1"
                  },
                  {
                    "fixed": "10.11.19"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "introduced": "11.4.1"
                  },
                  {
                    "fixed": "11.4.13"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "introduced": "11.8.1"
                  },
                  {
                    "fixed": "11.8.9"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "introduced": "12.3.1"
                  },
                  {
                    "fixed": "12.3.3"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "introduced": "13.0.1"
                  },
                  {
                    "fixed": "13.0.2"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "fixed": "98437c30ae52ed709f266e5f8095d779261a5879"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "mariadb-10.11.19",
                "range": [
                  {
                    "fixed": "93e051860a9c7e87ee8cee6ed38b640d491f7170"
                  }
                ],
                "source": "REFERENCES_TAG"
              },
              {
                "original_tag": "mariadb-11.4.13",
                "range": [
                  {
                    "fixed": "170b1d70737be6f134448f51713cdc1ae215b420"
                  }
                ],
                "source": "REFERENCES_TAG"
              },
              {
                "original_tag": "mariadb-11.8.9",
                "range": [
                  {
                    "fixed": "bf9193a939f515e95dd8def1a5468088c91cede6"
                  }
                ],
                "source": "REFERENCES_TAG"
              },
              {
                "original_tag": "mariadb-12.3.3",
                "range": [
                  {
                    "fixed": "83e909fc2a0dbc394b4b683fb3fa2d7dcf26cc5e"
                  }
                ],
                "source": "REFERENCES_TAG"
              },
              {
                "original_tag": "mariadb-13.0.2",
                "range": [
                  {
                    "fixed": "620a4b5624222048fece7fe1789978ae0675cae2"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "2437674291f31c91869a74eb6ebd9f03dc52bd43"
            },
            {
              "fixed": "93e051860a9c7e87ee8cee6ed38b640d491f7170"
            },
            {
              "introduced": "fa69b085b10f19a3a8b6e7adab27c104924333ae"
            },
            {
              "fixed": "170b1d70737be6f134448f51713cdc1ae215b420"
            },
            {
              "introduced": "1c4aed7c680c0402d6e97e097f03815c0e9bf4c5"
            },
            {
              "fixed": "bf9193a939f515e95dd8def1a5468088c91cede6"
            },
            {
              "introduced": "21a0714a118614982d20bfa504763d7247800091"
            },
            {
              "fixed": "83e909fc2a0dbc394b4b683fb3fa2d7dcf26cc5e"
            },
            {
              "introduced": "7f923870722c5d382e16d56af526d1ee4e03f987"
            },
            {
              "fixed": "620a4b5624222048fece7fe1789978ae0675cae2"
            },
            {
              "fixed": "98437c30ae52ed709f266e5f8095d779261a5879"
            }
          ],
          "repo": "https://github.com/mariadb/server",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-h4vr-wpff-jfx4"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-73"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102523.json"
  },
  "details": "MariaDB server is a community developed fork of MySQL server. From 10.11.1 until 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, ALTER TABLE ... CONVERT ... PARTITION does not apply filename encoding to user-specified partition names before using them in filesystem path construction. An authenticated database user can use a partition name requiring filename escaping to make the conversion operate on table files the user is not authorized to access, allowing unauthorized table reads or modifications. This issue is fixed in versions 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.",
  "id": "CVE-2026-102523",
  "modified": "2026-11-07T02:30:59.822310146Z",
  "published": "2026-11-05T15:31:27.191Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2"
    },
    {
      "type": "WEB",
      "url": "https://jira.mariadb.org/browse/MDEV-40413"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102523.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/MariaDB/server/security/advisories/GHSA-h4vr-wpff-jfx4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102523"
    },
    {
      "type": "FIX",
      "url": "https://github.com/MariaDB/server/commit/98437c30ae52ed709f266e5f8095d779261a5879"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "MariaDB server: Authorization bypass via ALTER TABLE ... CONVERT ... PARTITION"
}