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Fencer Vulns
high 8.6

CVE-2026-32710 json

Heap-based Buffer Overflow in MariaDB

published 2026-03-20 7 mo ago modified 2026-09-08 2 mo ago also BIT-mariadb-2026-32710 , BIT-mariadb-min-2026-32710 , BIT-mysql-client-2026-32710 , EUVD-2026-13764 , GHSA-4rj5-2227-9wgc

cvss
8.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

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.

Patch / fix

  • bitnami mariadb 11.4.10, 11.8.6, 12.2.2
  • bitnami mariadb-min 11.4.10, 11.8.6, 12.2.2
  • bitnami mysql-client 11.4.10, 11.8.6, 12.2.2
  • mariadb mariadb 11.4.10, 11.8.6, 12.2.2
  • mariadb Debian 13 1:11.8.6-0+deb13u1
  • mariadb Debian 14 1:11.8.6-1

debian advisories DEBIAN-CVE-2026-32710

  • galera RHEL 9 26.4.25-1.module+el9.8.0+24146+e179c349
  • mariadb RHEL 9 3:11.8.6-2.module+el9.8.0+24146+e179c349
  • mariadb-pam RHEL 9 3:11.8.6-2.module+el9.8.0+24146+e179c349
  • mariadb-test RHEL 9 3:11.8.6-2.module+el9.8.0+24146+e179c349
  • mariadb-backup RHEL 9 3:11.8.6-2.module+el9.8.0+24146+e179c349
  • mariadb-common RHEL 9 3:11.8.6-2.module+el9.8.0+24146+e179c349
  • mariadb-errmsg RHEL 9 3:11.8.6-2.module+el9.8.0+24146+e179c349
  • mariadb-server RHEL 9 3:11.8.6-2.module+el9.8.0+24146+e179c349

red hat advisories RHSA-2026:19182RHSA-2026:19021

  • mariadb SLE Module for Server Applications 15 SP7, SLE Module for Package Hub 15 SP7 11.8.6-150700.3.12.1

suse advisories SUSE-SU-2026:1367-1

  • mariadb openSUSE Tumbleweed 11.8.6-1.1

opensuse advisories openSUSE-SU-2026:10694-1

  • galera Rocky Linux 10 26.4.25-1.el10_2
  • mariadb11.8 Rocky Linux 10 3:11.8.6-2.el10_2
  • galera Rocky Linux 9 26.4.25-1.module+el9.8.0+40192+484cc2de
  • mariadb Rocky Linux 9 3:11.8.6-2.module+el9.8.0+40192+484cc2de

rocky linux advisories RLSA-2026:19021RLSA-2026:19182

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-32710 updated cvss 7.5

MariaDB: MariaDB: Remote Code Execution or Denial of Service via JSON_SCHEMA_VALID() function vulnerability

  • Red Hat Enterprise Linux AppStream (v. 9) galera 26.4.25-1.module+el9.8.0+24146+e179c349, mariadb 11.8.6-2.module+el9.8.0+24146+e179c349, mariadb-pam 11.8.6-2.module+el9.8.0+24146+e179c349, mariadb-test 11.8.6-2.module+el9.8.0+24146+e179c349, mariadb-backup 11.8.6-2.module+el9.8.0+24146+e179c349, mariadb-common 11.8.6-2.module+el9.8.0+24146+e179c349, +8 more
    fixed: vendor fix RHSA-2026:19182
  • Red Hat Enterprise Linux AppStream (v. 10) galera 26.4.25-1.el10_2, mariadb11.8 11.8.6-2.el10_2, mariadb11.8-pam 11.8.6-2.el10_2, mariadb11.8-test 11.8.6-2.el10_2, mariadb11.8-backup 11.8.6-2.el10_2, mariadb11.8-common 11.8.6-2.el10_2, +8 more
    fixed: vendor fix RHSA-2026:19021
  • Red Hat Enterprise Linux 7 mariadb, mariadb-libs, mariadb-test, mariadb-bench, mariadb-server, mariadb-embedded Red Hat Enterprise Linux 8 Judy, galera, mariadb, mariadb-pam, mariadb-test, mariadb-backup, +8 more Red Hat Enterprise Linux 9 mariadb, mariadb-pam, mariadb-test, mariadb-backup, mariadb-common, mariadb-errmsg, +6 more Red Hat Enterprise Linux 10 mariadb10.11
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
7 mo ago

Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.6 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
OSV 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami mariadb
>=11.4.1, <11.4.10
>=11.8.1, <11.8.6
>=12.1.2, <12.2.2
11.4.10
11.8.6
12.2.2
bitnami mariadb-min
>=11.4.1, <11.4.10
>=11.8.1, <11.8.6
>=12.1.2, <12.2.2
11.4.10
11.8.6
12.2.2
bitnami mysql-client
>=11.4.1, <11.4.10
>=11.8.1, <11.8.6
>=12.1.2, <12.2.2
11.4.10
11.8.6
12.2.2

Affected products

  • MariaDB server

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

The maintainers of MariaDB/server published their own advisory on GitHub. Reviewed sources take precedence over it.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.