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Critical · 9.9 Public exploit CVE-2026-92262 EUVD-2026-102939

MariaDB: Numerous issues caused by historical #mysql50# tablename encoding bypass.

Published Oct 16, 2026 · Updated Oct 21, 2026 · Assigned by GitHub_M

Vendor: MariaDB Product: server Package: mariadb Package: mariadb Package: mariadb-10.0 Package: mariadb-10.1 Package: mariadb-10.3 Package: mariadb-10.6 Ecosystem: Debian Ecosystem: Ubuntu

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 #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 products

VendorProductAffectedFixed
MariaDB server >= 10.6.1, < 10.6.28, >= 10.11.1, < 10.11.19, >= 11.4.1, < 11.4.13, >= 11.8.1, < 11.8.9, >= 12.3.1, < 12.3.3, >= 13.0.1, < 13.0.2 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 mariadb 1:11.8.9+ds-1 —
Debian 13 mariadb No fix yet —
Debian 12 mariadb No fix yet —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 26.10 mariadb No fix yet —
Ubuntu 26.04 LTS mariadb No fix yet —
Ubuntu 24.04 LTS mariadb No fix yet —
Ubuntu 22.04 LTS mariadb-10.6 No fix yet —
Ubuntu 20.04 LTS mariadb-10.3 No fix yet —
Show 2 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 18.04 LTS mariadb-10.1 No fix yet —
Ubuntu 16.04 LTS mariadb-10.0 No fix yet —

openSUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed mariadb 12.3.2-3.1 openSUSE-SU-2026:12245-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 mariadb1011 +15 3:10.11.19-1.amzn2023.0.1 ALAS2023-2026-3308
Amazon Linux 2023 mariadb114 +15 3:11.4.13-1.amzn2023.0.1 ALAS2023-2026-3309
Amazon Linux 2023 mariadb118 +15 3:11.8.9-1.amzn2023.0.1 ALAS2023-2026-3310
Amazon Linux 2023 mariadb123 +15 3:12.3.3-2.amzn2023.0.1 ALAS2023-2026-3311

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 6

References