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CVE-2026-107823: MariaDB: privilege escalation via incorrect view frm parsing

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-09 · updated 2026-10-14
• Weakness: CWE-116

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, the MariaDB view FRM parser did not safely encode embedded newline characters in a username. An account with CREATE USER and CREATE VIEW WITH GRANT OPTION could create a crafted username containing additional view metadata, causing the parser to interpret part of the username as security metadata and potentially escalating database privileges. 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; from 13.0.1 before 13.0.2 — fixed in 10.11.19, 10.6.28, 11.4.13, 11.8.9, 12.3.3, 13.0.2

How to fix

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

References

• https://github.com/MariaDB/server/commit/8a642bc8103aadc6b2087d781ba8e1595616a2c4
• 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-g2q2-3936-cp37
• https://jira.mariadb.org/browse/MDEV-40484

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