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CVE-2026-85985— MariaDB: Unauthorized file access via CONNECT engine UDFs

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 服务器的社区开发分支。在 MariaDB 10.6.1 至 10.6.28、10.11.19、11.4.13、11.8.9、12.3.3 和 13.0.2 版本中，CONNECT 引擎插件的文件访问用户定义函数（UDF）json_file()、bson_file()、jfile_make()、bfile_make() 和 jbin_file() 存在漏洞，因为这些函数均未强制执行 FILE 权限或 secure_file_priv 配置。低权限攻击者可通过调用 CONNECT

CVSS 5.4 · Medium

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-2026-85985

Vulnerability Information
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Vulnerability Title
MariaDB: Unauthorized file access via CONNECT engine UDFs
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 CONNECT engine plugin file-access UDFs json_file(), bson_file(), jfile_make(), bfile_make(), and jbin_file() are affected because each does not enforce FILE privilege or the secure_file_priv setting. A low-privileged attacker can trigger the issue by calling a CONNECT file-access UDF with a filesystem path, then invoke a CONNECT file-access UDF to access a filesystem path and read or write files that the database account is not authorized to access, subject to operating-system permissions. 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:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
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-2026-85985

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III. Intelligence Information for CVE-2026-85985

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Patches & Fixes for CVE-2026-85985 (2)

Vendor Pages for CVE-2026-85985 (5)

Same Patch Batch · MariaDB · 2026-10-16 · 7 CVEs total

CVE-2026-85748 9.9 CRITICAL MariaDB: Use-after-free with a large number of SYS_REFCURSOR's
CVE-2026-85746 9.9 CRITICAL MariaDB: Out-of-bound buffer write on in `ST_AsText` of nested GeometryCollections
CVE-2026-92262 9.9 CRITICAL MariaDB: Numerous issues caused by historical #mysql50# tablename encoding bypass.
CVE-2026-97380 8.8 HIGH MariaDB: GRANT PROXY with empty password incorrectly checks grantor's privileges
CVE-2026-86047 7.7 HIGH MariaDB: Insufficient quoting in mariadb-dump and SHOW commands
CVE-2026-85745 4.3 MEDIUM MariaDB: Out-of-bound buffer read on in `ST_Area` of a multipolygon.

IV. Related Vulnerabilities

Same product: server
Same vendor: MariaDB
Same weakness: CWE-862

V. Comments for CVE-2026-85985

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