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OpenAdvisories
High · 8.0 Public exploit CVE-2026-107821 EUVD-2026-95921

MariaDB: insufficient validation of binary frm data when opening a table

Published Oct 9, 2026 · Updated Oct 9, 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, MariaDB insufficiently validated counts, offsets, lengths, and field boundaries in FRM metadata while opening binary FRM files. An attacker able to place a crafted FRM file in the data directory could trigger out-of-bounds reads or writes, crash the server, or potentially execute code. 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 —

Red Hat

Security tracker ↗
ReleasePackageFixed inAdvisory
Red Hat Hardened Images 1 mariadb10.11 +19 10.11.18-4.1.hum1 RHSA-2026:83108
Red Hat Hardened Images 1 mariadb11.8 +20 3:11.8.9-0.1.hum1 RHSA-2026:84689

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

  • pinebudweiser/CVE-2026-107821-PoC ★ 0 · Sep 10, 2026

    The MariaDB 13.1.0 RCE LAB is a testing environment designed to validate an exploit chain that combines an OOB Read vulnerability in the share->field pointer array with multiple additional vulnerabil…

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

Advisories 8

References