---
id: CVE-2026-92262
title: >-
  MariaDB: Numerous issues caused by historical #mysql50# tablename encoding
  bypass.
summary: >-
  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…
severity: critical
cvss: 9.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-706
vendor: MariaDB
product: server
affected:
  - 'server >= 10.6.1, < 10.6.28'
  - 'server >= 10.11.1, < 10.11.19'
  - 'server >= 11.4.1, < 11.4.13'
  - 'server >= 11.8.1, < 11.8.9'
  - 'server >= 12.3.1, < 12.3.3'
  - 'server >= 13.0.1, < 13.0.2'
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T16:25:46.964Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-92262'
references:
  - url: 'https://github.com/MariaDB/server/security/advisories/GHSA-65jj-h265-3m7h'
    label: 'https://github.com/MariaDB/server/security/advisories/GHSA-65jj-h265-3m7h'
  - url: >-
      https://github.com/MariaDB/server/commit/574ba66b2d6c5d71db83d416677876e9b592858e
    label: >-
      https://github.com/MariaDB/server/commit/574ba66b2d6c5d71db83d416677876e9b592858e
  - url: >-
      https://github.com/MariaDB/server/commit/f277eefa424850a8cba5c2371406047f6395e8bb
    label: >-
      https://github.com/MariaDB/server/commit/f277eefa424850a8cba5c2371406047f6395e8bb
  - url: 'https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19'
    label: 'https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19'
  - url: 'https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28'
    label: 'https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28'
  - url: 'https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13'
    label: 'https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13'
  - url: 'https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9'
    label: 'https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9'
  - url: 'https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3'
    label: 'https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3'
  - url: 'https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2'
    label: 'https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2'
  - url: 'https://jira.mariadb.org/browse/MDEV-40362'
    label: 'https://jira.mariadb.org/browse/MDEV-40362'
tags:
  - cve.org
ingestedAt: '2026-10-16T17:24:46.888Z'
---

## Overview

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.

## Affected

- `server >= 10.6.1, < 10.6.28`
- `server >= 10.11.1, < 10.11.19`
- `server >= 11.4.1, < 11.4.13`
- `server >= 11.8.1, < 11.8.9`
- `server >= 12.3.1, < 12.3.3`
- `server >= 13.0.1, < 13.0.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.