FKIE_CVE-2026-107822

Vulnerability from fkie_nvd - Published: 2026-10-09 18:17 - Updated: 2026-10-09 18:17
Severity
6.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
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.
References
security-advisories@github.comhttps://github.com/MariaDB/server/commit/67ea07dd3400004e4f7ae01bf977f4344bbe064b
security-advisories@github.comhttps://github.com/MariaDB/server/releases/tag/mariadb-10.11.19
security-advisories@github.comhttps://github.com/MariaDB/server/releases/tag/mariadb-10.6.28
security-advisories@github.comhttps://github.com/MariaDB/server/releases/tag/mariadb-11.4.13
security-advisories@github.comhttps://github.com/MariaDB/server/releases/tag/mariadb-11.8.9
security-advisories@github.comhttps://github.com/MariaDB/server/releases/tag/mariadb-12.3.3
security-advisories@github.comhttps://github.com/MariaDB/server/releases/tag/mariadb-13.0.2
security-advisories@github.comhttps://github.com/MariaDB/server/security/advisories/GHSA-2m85-2x26-36rf
security-advisories@github.comhttps://jira.mariadb.org/browse/MDEV-40541
Impacted products
Vendor Product Version
To clipboard 

{
  "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"
    }
  ]
}



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