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CVE-2026-107817— MariaDB: mysql_json plugin OOB reads

Quick assessment

Affected
MariaDB server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MariaDB 服务器是 MySQL 服务器的一个社区开发分支。在版本 10.6.1 至 10.6.28、10.11.19、11.4.13、11.8.9、12.3.3 和 13.0.2 中，mysql_json 插件假设导入的 MySQL 表包含有效的 MySQL 二进制 JSON 数据。精心构造的包含无效 JSON 数据的 MySQL 表可能导致越界读取、信息泄露或服务器崩溃。该问题已在版本 10.6.28、10.11.19、11.4.13、11.8.9、12.3.3 和 13.0.2 中得到修复。

CVSS 4.4 · Medium

Possible ATT&CK Techniques 1 AI

T1135 · Network Share Discovery

Affected Version Matrix 6

VendorProduct Version RangeStatus
MariaDB server >= 10.6.1, < 10.6.28 affected
>= 10.11.1, < 10.11.19 affected
>= 11.4.1, < 11.4.13 affected
>= 11.8.1, < 11.8.9 affected
>= 12.3.1, < 12.3.3 affected
>= 13.0.1, < 13.0.2 affected
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I. Basic Information for CVE-2026-107817

Vulnerability Information
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Vulnerability Title
MariaDB: mysql_json plugin OOB reads
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
MariaDB server >= 10.6.1, < 10.6.28 -

II. Public POCs for CVE-2026-107817

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III. Intelligence Information for CVE-2026-107817

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Other References for CVE-2026-107817 (9)

Same Patch Batch · MariaDB · 2026-10-09 · 9 CVEs total

CVE-2026-107815 8.5 HIGH MariaDB: one byte OOB write in DOS tables of the CONNECT engine
CVE-2026-107814 8.4 HIGH MariaDB: Insecure $HOME in MariaDB rpm packages
CVE-2026-107818 8.4 HIGH MariaDB: environment injection via wsrep bootstrap in the mariadb.service file
CVE-2026-107821 8.0 HIGH MariaDB: insufficient validation of binary frm data when opening a table
CVE-2026-107823 7.2 HIGH MariaDB: privilege escalation via incorrect view frm parsing
CVE-2026-107816 6.4 MEDIUM MariaDB: `qc_info` plugin can do OOB reads if query contains \0
CVE-2026-107822 6.4 MEDIUM MariaDB: database privilege escalation via user / role name collision in the acl cache
CVE-2026-107819 5.9 MEDIUM MariaDB Connector/C: libmariadb allowed cleartext password leakage on TLS hostname verific

IV. Related Vulnerabilities

Same product: server
Same vendor: MariaDB
Same weakness: CWE-125

V. Comments for CVE-2026-107817

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