CVE-2026-32710 | Heap-based Buffer Overflow in MariaDB

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.

Published: 2026-03-20 Last update: 2026-03-31 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-32710 is rated Moderate Risk (43.3/100): CVSS High severity, with low exploitation likelihood (EPSS 0.10%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-32710

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-21 0.21% 0.10% -0.11%
2 2026-04-01 0.26% 0.21% -0.05%
3 2026-03-21 — 0.26% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-32710

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.5 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 6.0 [email protected]
9.9 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.1 6.0 [email protected]

Weakness enumeration for CVE-2026-32710

OS Trackers for CVE-2026-32710

vendor priority summary link
alpine — CVE-2026-32710: 1 source package rows (mariadb); 18 state rows across 4 repos (3.21-main, 3.22-main, 3.23-main, edge-main); fixed 0, open 18. https://security.alpinelinux.org/vuln/CVE-2026-32710
debian unimportant CVE-2026-32710 unimportant priority: Debian including 1 source packages (mariadb), 4 status rows across 4 suites (bookworm, forky, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2026-32710
redhat medium — https://access.redhat.com/security/cve/CVE-2026-32710
suse high CVE-2026-32710 severity important: SUSE including 24 source package names (libmariadbd-devel, libmariadbd-devel-11.8.6-150700.3.12.1, …), 111 product×package rows across 20 product lines (SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS, SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS, … (20 product lines)): Known Not Affected 104, Fixed 7. https://www.suse.com/security/cve/CVE-2026-32710/
ubuntu medium CVE-2026-32710 medium priority: Ubuntu including 5 source packages (mariadb, mariadb-10.0, mariadb-10.1, mariadb-10.3, mariadb-10.6), 23 status rows across 7 suites (bionic, focal, jammy, noble, questing, upstream, xenial): DNE 12, needs-triage 10, released 1. https://ubuntu.com/security/CVE-2026-32710

Affected software / configurations for CVE-2026-32710

Vendor Product Version Raw CPE
mariadb mariadb >= 11.4.1, < 11.4.10 cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
mariadb mariadb >= 11.8.1, < 11.8.6 cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
mariadb mariadb 12.1.2 cpe:2.3:a:mariadb:mariadb:12.1.2:*:*:*:*:*:*:*

References for CVE-2026-32710

cvelogic Threat Intelligence