What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-16 · updated 2026-10-20
• Weakness: CWE-89

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.

Affected products

• MariaDB: from 10.6.1 before 10.6.28; from 10.11.1 before 10.11.19; from 11.4.1 before 11.4.13; from 11.8.1 before 11.8.9; from 12.3.1 before 12.3.3; 13.0.1 (and their updates) — fixed in 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3

How to fix

Upgrade to a fixed version: MariaDB 10.6.28, 10.11.19, 11.4.13, 11.8.9. Check the vendor advisory for mitigations.

References

• https://github.com/MariaDB/server/commit/2b28d1c424104429eeed43115ee6d8a803671d52
• https://github.com/MariaDB/server/commit/3646569225758c8225e7342783d775ef7c7570e5
• https://github.com/MariaDB/server/commit/5acb43522863c9bd6b91f354104ea247bf513e9a
• https://github.com/MariaDB/server/commit/9d4ffe23b25808f7858b2dc48106fbd60cf0e513
• https://github.com/MariaDB/server/commit/d5d741a3076f911b468518d6b06a917593498c5b
• https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19
• https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28
• https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13
• https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9
• https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3
• https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2
• https://github.com/MariaDB/server/security/advisories/GHSA-wxr3-wm3p-7w6p

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