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CVE-2026-107823— MariaDB: privilege escalation via incorrect view frm parsing

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。在版本 10.6.1 至 10.6.27、10.11.18、11.4.12、11.8.8 和 12.3.2 中，MariaDB 的视图 FRM 解析器未能对用户名字符中嵌入的换行符进行安全编码。拥有 CREATE USER 和 CREATE VIEW WITH GRANT OPTION 权限的账户可以创建一个精心构造的用户名，其中包含额外的视图元数据，导致解析器将用户名的部分数据误认为安全元数据，从而可能提升数据库权限。该问题已在版本 10.6.28、10

CVSS 7.2 · High EPSS 0.43% · P36

Possible ATT&CK Techniques 1 AI

T1136 · Create Account

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-2026-107823

Vulnerability Information
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Vulnerability Title
MariaDB: privilege escalation via incorrect view frm parsing
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 MariaDB view FRM parser did not safely encode embedded newline characters in a username. An account with CREATE USER and CREATE VIEW WITH GRANT OPTION could create a crafted username containing additional view metadata, causing the parser to interpret part of the username as security metadata and potentially escalating database privileges. 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:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对输出编码和转义不恰当
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-2026-107823

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III. Intelligence Information for CVE-2026-107823

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Patches & Fixes for CVE-2026-107823 (3)

Vendor Advisories for CVE-2026-107823 (1)

Vendor Pages for CVE-2026-107823 (4)

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-2026-107816 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
CVE-2026-107817 4.4 MEDIUM MariaDB: mysql_json plugin OOB reads

IV. Related Vulnerabilities

Same product: server
Same vendor: MariaDB
Same weakness: CWE-116

V. Comments for CVE-2026-107823

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