CVE-2026-92262MariaDB: Numerous issues caused by historical #mysql50# tablename encoding bypass.

Descripción

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 #mysql50# bypass prefix is affected because it allows the #mysql50# prefix to bypass normal table-name filesystem encoding. An attacker can trigger the issue with a table name using the #mysql50# prefix, then use a #mysql50# table name to access files under their legacy unencoded name and cause crashes, data corruption, data exfiltration, or remote code execution. 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.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/MariaDB/server/security/advisories/GHSA-65jj-h265-3m7h Vendor Advisory
• https://github.com/MariaDB/server/commit/574ba66b2d6c5d71db83d416677876e9b592858e Patch
• https://github.com/MariaDB/server/commit/f277eefa424850a8cba5c2371406047f6395e8bb Patch
• https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19 Release Notes
• https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28 Release Notes
• https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13 Release Notes
• https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9 Release Notes
• https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3 Release Notes
• https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2 Release Notes
• https://jira.mariadb.org/browse/MDEV-40362 Issue Tracking