CVE-2026-85748

{
  "id": "CVE-2026-85748",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-16T17:17:51.303",
  "lastModified": "2026-10-20T15:32:54.420",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "MariaDB server is a community developed fork of MySQL server. From 12.3.1 until 12.3.3 and 13.0.2, SYS_REFCURSOR handling is affected because cursor-array reallocation can leave stale references in routine contexts. A low-privileged attacker can open a large number of SYS_REFCURSORs and then fetch one to trigger a use-after-free that can enable remote code execution when combined with another vulnerability. This issue is fixed in versions 12.3.3 and 13.0.2."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "MariaDB",
          "product": "server",
          "versions": [
            {
              "version": ">= 12.3.1, < 12.3.3",
              "status": "affected"
            },
            {
              "version": ">= 13.0.1, < 13.0.2",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "baseScore": 9.9,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 6.0
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-16T16:54:30.361781Z",
          "id": "CVE-2026-85748",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "12.3.1",
              "versionEndExcluding": "12.3.3",
              "matchCriteriaId": "E6988F1C-2D11-431B-BBE4-3AA8483627C8"
            },
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              "matchCriteriaId": "E46FBE57-06D5-489E-9ECE-333F5F9AFD06"
            }
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  "references": [
    {
      "url": "https://github.com/MariaDB/server/commit/91156c3de58762196605150ab3f756fe952592d1",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/MariaDB/server/commit/9b075b2cb53338f67e7230cc585e02d2d34514ed",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3",
      "source": "[email protected]",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2",
      "source": "[email protected]",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/MariaDB/server/security/advisories/GHSA-mv8g-9f7q-hprm",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://jira.mariadb.org/browse/MDEV-40396",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking"
      ]
    },
    {
      "url": "https://jira.mariadb.org/browse/MDEV-40639",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking"
      ]
    }
  ]
}