CVE-2026-107822 (GCVE-0-2026-107822)

Vulnerability from cvelistv5 – Published: 2026-10-09 17:28 – Updated: 2026-10-09 17:28
VLAI
Title
MariaDB: database privilege escalation via user / role name collision in the acl cache
Summary
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, MariaDB's ACL cache could generate the same database-privilege cache key for role and localhost user names that matched because both used an empty IP component. An attacker with CREATE USER could create the colliding principal and, when the original principal's database privileges were cached, exercise privileges assigned to the other account. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
Severity
6.4 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-706 - Use of Incorrectly-Resolved Name or Reference
  • CWE-863 - Incorrect Authorization
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7642 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
MariaDB server Affected: >= 10.6.1, < 10.6.28
Affected: >= 10.11.1, < 10.11.19
Affected: >= 11.4.1, < 11.4.13
Affected: >= 11.8.1, < 11.8.9
Affected: >= 12.3.1, < 12.3.3
Affected: >= 13.0.1, < 13.0.2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "server",
          "vendor": "MariaDB",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 10.6.1, \u003c 10.6.28"
            },
            {
              "status": "affected",
              "version": "\u003e= 10.11.1, \u003c 10.11.19"
            },
            {
              "status": "affected",
              "version": "\u003e= 11.4.1, \u003c 11.4.13"
            },
            {
              "status": "affected",
              "version": "\u003e= 11.8.1, \u003c 11.8.9"
            },
            {
              "status": "affected",
              "version": "\u003e= 12.3.1, \u003c 12.3.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 13.0.1, \u003c 13.0.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, MariaDB\u0027s ACL cache could generate the same database-privilege cache key for role and localhost user names that matched because both used an empty IP component. An attacker with CREATE USER could create the colliding principal and, when the original principal\u0027s database privileges were cached, exercise privileges assigned to the other account. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-706",
              "description": "CWE-706: Use of Incorrectly-Resolved Name or Reference",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863: Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-09T17:28:47.578Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/MariaDB/server/security/advisories/GHSA-2m85-2x26-36rf",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/MariaDB/server/security/advisories/GHSA-2m85-2x26-36rf"
        },
        {
          "name": "https://github.com/MariaDB/server/commit/67ea07dd3400004e4f7ae01bf977f4344bbe064b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/MariaDB/server/commit/67ea07dd3400004e4f7ae01bf977f4344bbe064b"
        },
        {
          "name": "https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19"
        },
        {
          "name": "https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28"
        },
        {
          "name": "https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13"
        },
        {
          "name": "https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9"
        },
        {
          "name": "https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3"
        },
        {
          "name": "https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2"
        },
        {
          "name": "https://jira.mariadb.org/browse/MDEV-40541",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://jira.mariadb.org/browse/MDEV-40541"
        }
      ],
      "source": {
        "advisory": "GHSA-2m85-2x26-36rf",
        "discovery": "UNKNOWN"
      },
      "title": "MariaDB: database privilege escalation via user / role name collision in the acl cache"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-107822",
    "datePublished": "2026-10-09T17:28:47.578Z",
    "dateReserved": "2026-10-08T21:23:59.823Z",
    "dateUpdated": "2026-10-09T17:28:47.578Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "server",
                "vendor": "MariaDB",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003e= 10.6.1, \u003c 10.6.28"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 10.11.1, \u003c 10.11.19"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 11.4.1, \u003c 11.4.13"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 11.8.1, \u003c 11.8.9"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 12.3.1, \u003c 12.3.3"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 13.0.1, \u003c 13.0.2"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, MariaDB\u0027s ACL cache could generate the same database-privilege cache key for role and localhost user names that matched because both used an empty IP component. An attacker with CREATE USER could create the colliding principal and, when the original principal\u0027s database privileges were cached, exercise privileges assigned to the other account. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2."
          }
        ],
        "id": "CVE-2026-107822",
        "lastModified": "2026-10-09T18:17:04.030",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 6.4,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 0.5,
              "impactScore": 5.9,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-09T18:17:04.030",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/MariaDB/server/commit/67ea07dd3400004e4f7ae01bf977f4344bbe064b"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/MariaDB/server/security/advisories/GHSA-2m85-2x26-36rf"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://jira.mariadb.org/browse/MDEV-40541"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-706"
              },
              {
                "lang": "en",
                "value": "CWE-863"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-09T19:01:31+00:00",
      "cve": "CVE-2026-107822",
      "id": "CVE-2026-107822",
      "initial_release_date": "2026-10-09T17:28:47.578000+00:00",
      "product_status:known_affected": "154",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "mariadb: MariaDB: Privilege escalation via ACL cache key collision",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-107822.json",
      "version": "3"
    }
  }
}



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