Heap-based buffer overflow in MariaDB - CVE-2026-32710
Published: April 28, 2026
Vulnerability identifier: #VU128347
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-32710
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Debian
Affected software:
MariaDB
MariaDB
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to heap-based buffer overflow in the JSON_SCHEMA_VALID() function when processing crafted input. A remote user can send specially crafted input to execute arbitrary code.
Successful code execution requires tight control over memory layout and is generally only attainable in a lab environment.
How to mitigate CVE-2026-32710
Install security update from vendor's website.