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CVE-2026-100683— Budibase before 3.45.0 SQL Injection via column-rename DDL

Quick assessment

Affected
budibase 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.

在 Budibase 3.45.0 版本之前， 组件在 中构建 MySQL 和 MSSQL 的列重命名 DDL（数据定义语言）语句时，存在直接插值漏洞。具体而言，标识符被直接插入到原始查询字符串中（MySQL 使用反引号包裹，MSSQL 使用单引号包装的 字面量），而未能应用项目内置的 / 安全辅助函数进行正确转义。 具备连接 MySQL 或 MSSQL 数据源 DDL 权限的攻击者，可以创建一个列名中包含特殊字符的列：对于 MySQL，列名可包含反引号及额外 SQL 代码；对于 MSSQL，列名可包含单引号及额外

CVSS 8.0 · High EPSS 0.21% · P10
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I. Basic Information for CVE-2026-100683

Vulnerability Information
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Vulnerability Title
Budibase before 3.45.0 SQL Injection via column-rename DDL
Source: CVE Program / CVE List V5
Vulnerability Description
Budibase (@budibase/server) before 3.45.0 builds MySQL and MSSQL column-rename DDL in packages/backend-core/src/sql/sqlTable.ts by interpolating identifiers directly into a raw query string (backtick-quoted for MySQL, a single-quoted sp_rename literal for MSSQL) without applying the project's quoteMySqlIdentifier / quoteSqlServerIdentifier helpers. An attacker with DDL rights on a connected MySQL/MSSQL datasource can create a column whose name contains a backtick (MySQL) or single quote (MSSQL) plus additional SQL; Budibase's schema introspection stores the name verbatim, and when a Budibase builder later renames that column through the UI (POST /api/tables with _rename.old), the embedded quote character terminates the identifier and the injected SQL is executed. Because the MySQL connection is opened with multipleStatements: true, stacked statements run as Budibase's datasource user, allowing arbitrary reads, writes, or destructive operations on the connected database outside Budibase's row/table permission model. Fixed in 3.45.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
budibase server 0 ~ 3.45.0 -

II. Public POCs for CVE-2026-100683

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III. Intelligence Information for CVE-2026-100683

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Vendor Advisories for CVE-2026-100683 (1)

Other References for CVE-2026-100683 (1)

Same Patch Batch · budibase · 2026-09-26 · 9 CVEs total

CVE-2026-100682 8.8 HIGH Budibase Server before 3.45.0 Arbitrary File Write via ZIP Symlink
CVE-2026-100686 8.1 HIGH Budibase before 3.45.0 Cross-Workspace Privilege Escalation via POST /api/global/groups/:g
CVE-2026-100684 8.1 HIGH Budibase Server 3.41.0 before 3.45.0 Authentication Bypass via OIDC
CVE-2026-100680 8.1 HIGH Budibase before 3.45.0 Arbitrary Local File Read via OpenAPI Import
CVE-2026-100685 7.7 HIGH Budibase before 3.45.0 Information Disclosure via Chat Links
CVE-2026-100688 6.5 MEDIUM Budibase server before 3.45.0 Cross-Tenant Information Disclosure
CVE-2026-100687 5.5 MEDIUM Budibase Server before 3.45.0 Credential Exposure via External Table Broadcast
CVE-2026-100681 5.4 MEDIUM Budibase before 3.45.0 SSRF and OAuth Token Exfiltration via Teams Webhook

IV. Related Vulnerabilities

Same product: server
Same vendor: budibase
Same weakness: CWE-89

V. Comments for CVE-2026-100683

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