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CVE-2026-86047— MariaDB: Insufficient quoting in mariadb-dump and SHOW commands

Quick assessment

Affected
MariaDB server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MariaDB 服务器是 MySQL 服务器的社区分支版本。在 MariaDB 10.6.1 至 10.6.28、10.11.19、11.4.13、11.8.9、12.3.3 和 13.0.2 等版本中， 、 以及 命令均存在漏洞。原因是这些命令在序列化 SQL 语句时，未能始终对标识符和值进行正确的引号转义。 低权限攻击者可通过以下步骤利用该漏洞：首先创建一个具有恶意构造标识符或值的对象，使其出现在 命令的输出或数据库转储文件中；随后，利用生成的 SQL 语句中包含的注入内容，创建新的对象，从而在应用被污染的输出

CVSS 7.7 · High EPSS 0.32% · P23

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 6

VendorProduct Version RangeStatus
MariaDB server >= 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 affected
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I. Basic Information for CVE-2026-86047

Vulnerability Information
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Vulnerability Title
MariaDB: Insufficient quoting in mariadb-dump and SHOW commands
Source: CVE Program / CVE List V5
Vulnerability Description
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, SHOW CREATE SERVER, SHOW CREATE USER, and mariadb-dump are affected because each does not consistently quote identifiers and values when serializing SQL. A low-privileged attacker can trigger the issue when an attacker-created object with crafted identifiers or values is included in SHOW output or a dump, then create an object with crafted identifiers or values so generated SQL contains injected statements and execute attacker-injected SQL when the poisoned output is applied. 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
MariaDB server >= 10.6.1, < 10.6.28 -

II. Public POCs for CVE-2026-86047

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III. Intelligence Information for CVE-2026-86047

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Patches & Fixes for CVE-2026-86047 (4)

Vendor Advisories for CVE-2026-86047 (1)

Vendor Pages for CVE-2026-86047 (8)

Other References for CVE-2026-86047 (1)

Same Patch Batch · MariaDB · 2026-10-16 · 7 CVEs total

CVE-2026-85748 9.9 CRITICAL MariaDB: Use-after-free with a large number of SYS_REFCURSOR's
CVE-2026-85746 9.9 CRITICAL MariaDB: Out-of-bound buffer write on in `ST_AsText` of nested GeometryCollections
CVE-2026-92262 9.9 CRITICAL MariaDB: Numerous issues caused by historical #mysql50# tablename encoding bypass.
CVE-2026-97380 8.8 HIGH MariaDB: GRANT PROXY with empty password incorrectly checks grantor's privileges
CVE-2026-85985 5.4 MEDIUM MariaDB: Unauthorized file access via CONNECT engine UDFs
CVE-2026-85745 4.3 MEDIUM MariaDB: Out-of-bound buffer read on in `ST_Area` of a multipolygon.

IV. Related Vulnerabilities

Same product: server
Same vendor: MariaDB
Same weakness: CWE-89

V. Comments for CVE-2026-86047

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