Critical severity · published Mar 20, 2026
CVE-2026-32710
Heap-based Buffer Overflow in MariaDB
9.9
CVSS
0.9%
EPSS
No
On KEV
Description
MariaDB server is a community developed fork of MySQL server. An authenticated user can crash MariaDB versions 11.4 before 11.4.10 and 11.8 before 11.8.6 via a bug in JSON_SCHEMA_VALID() function. Under certain conditions it might be possible to turn the crash into a remote code execution. These conditions require tight control over memory layout which is generally only attainable in a lab environment. This issue is fixed in MariaDB 11.4.10, MariaDB 11.8.6, and MariaDB 12.2.2.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 59% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
server · MariaDB
>= 11.4.1, < 11.4.10; >= 11.8.1, < 11.8.6; >= 12.1.2, < 12.2.2 · source: vendor
MA
Mariadb · Mariadb
11.4.1 before 11.4.10; 11.8.1 before 11.8.6; 12.1.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-32710
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-32710
Vendor Advisory
https://github.com/MariaDB/server/security/advisories/GHSA-4rj5-2227-9wgc
Issue Tracking
https://jira.mariadb.org/browse/MDEV-38356
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