Medium severity · published Oct 9, 2026
CVE-2026-107817
MariaDB: mysql_json plugin OOB reads
4.4
CVSS
0.2%
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, the mysql_json plugin assumed that imported MySQL tables contained valid MySQL binary JSON data. A specially prepared MySQL table containing invalid JSON data could cause out-of-bounds reads, information disclosure, or a server crash. 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:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 4% 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-2026-107817
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-107817
x_refsource_CONFIRM
https://github.com/MariaDB/server/security/advisories/GHSA-89ph-64cf-gqcc
x_refsource_MISC
https://github.com/MariaDB/server/commit/851f52470d470a96a66e0b7e5599f3b6c2e45907
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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