High severity · published Oct 9, 2026
CVE-2026-107821
MariaDB: insufficient validation of binary frm data when opening a table
8.0
CVSS
1.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
server · MariaDB
>= 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 · source: vendor
MA
Mariadb · Mariadb
10.6.1 before 10.6.28; 10.11.1 before 10.11.19; 11.4.1 before 11.4.13; 11.8.1 before 11.8.9; 12.3.1 before 12.3.3; 13.0.1 before 13.0.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-107821
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-107821
x_refsource_CONFIRM
https://github.com/MariaDB/server/security/advisories/GHSA-c4gx-34mg-95q5
x_refsource_MISC
https://github.com/MariaDB/server/commit/3b1c2e58abab5571bec4ff52773ddc75b1738da9
x_refsource_MISC
https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19
x_refsource_MISC
https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28
x_refsource_MISC
https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13
x_refsource_MISC
https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9
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