What’s Vulnerable › Vulnerabilities

CVE-2026-107821: MariaDB: insufficient validation of binary frm data when opening a table

• Severity: high (CVSS 8.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% 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-1285

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

• 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/3b1c2e58abab5571bec4ff52773ddc75b1738da9
• 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-c4gx-34mg-95q5
• https://jira.mariadb.org/browse/MDEV-40571

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