SQL Injection in Budibase Server
CVE-2026-100683
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.
Vulnerability class: SQL Injection
Published .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/Budibase/budibase/security/advisories/GHSA-ppj8-hmx2-m546 (vendor-advisory)
- www.vulncheck.com/advisories/budibase-before-3.45.0-sql-injection-via-column-re… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100683?
- CVE-2026-100683 is a high-severity vulnerability in Budibase Server, classified under SQL Injection. CVSS score: 8.0/10. Published 2026-09-26.
- How severe is CVE-2026-100683?
- High severity. CVSS v3 base score is 8.0 out of 10.