CVE-2026-107817

MariaDB: mysql_json plugin OOB reads

MEDIUM
4.4
CVSS Score
Published: October 9, 2026 at 05:22 PM UTC
Updated: October 14, 2026 at 02:12 PM UTC
1 product affected across 1 vendorMariaDB

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Severity
MEDIUM4.4
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

10.11.1 ≤ v < 10.11.1910.6.1 ≤ v < 10.6.2811.4.1 ≤ v < 11.4.1311.8.1 ≤ v < 11.8.912.3.1 ≤ v < 12.3.313.0.1 ≤ v < 13.0.2>= 10.11.1, < 10.11.19>= 10.6.1, < 10.6.28>= 11.4.1, < 11.4.13>= 11.8.1, < 11.8.9>= 12.3.1, < 12.3.3>= 13.0.1, < 13.0.2

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (9)

x_refsource_CONFIRMVendor Advisory
Source: cverecord
https://github.com/MariaDB/server/security/advisories/GHSA-89ph-64cf-gqcc
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.4MEDIUMGitHub_M
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-125

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