# CVE-2026-100683: Budibase SQL injection in column-rename DDL

Source: https://junglewise.ai/threats/cve-2026-100683-budibase-budibase-server-before-3-45-0-builds-mysql-and-mssql  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-26. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-100683 · Severity: high · CVSS 8 · Published 2026-09-26

Budibase is a low-code platform that lets users build database-driven applications. An attacker with database DDL (create/modify table) rights can plant malicious SQL code in a column name, which Budibase stores verbatim. When a Budibase builder later renames that column via the UI, the embedded SQL executes against the connected database with Budibase's database credentials, allowing the attacker to read, modify, or delete data without restriction.

Technologies: [Budibase Server](https://junglewise.ai/threats/technologies/budibase-server-1). Vendors: [Budibase](https://junglewise.ai/threats/vendors/budibase).

## Quick answers

**Is CVE-2026-100683 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-100683 being exploited in the wild.

**How severe is CVE-2026-100683?** High severity, with a CVSS score of 8, published 26 September 2026.

**Which products and versions are affected?** Budibase Server before 3.45.0.

**Is there a fix for CVE-2026-100683?** A patch was published on 2026-09-26: Fixed in version 3.45.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-100683 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-100683?** Check whether you run Budibase Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

Second-order SQL identifier injection in sqlTable.ts where MySQL and MSSQL column-rename operations interpolate identifiers directly into raw query strings without applying quoteMySqlIdentifier/quoteSqlServerIdentifier helpers. An attacker with DDL rights creates a column name containing a backtick (MySQL) or single quote (MSSQL) followed by stacked SQL; when a builder renames that column via POST /api/tables, the quote character breaks the identifier context and executes the injected SQL as Budibase's datasource user on the external database. MySQL multipleStatements: true enables full stacked query execution.

## Affected products

- Budibase @budibase/server before 3.45.0

## Timeline

- 2026-09-26: disclosed
- 2026-09-26: patched: Fixed in version 3.45.0

## References

- [https://github.com/Budibase/budibase/security/advisories/GHSA-ppj8-hmx2-m546](https://github.com/Budibase/budibase/security/advisories/GHSA-ppj8-hmx2-m546)
- [https://www.vulncheck.com/advisories/budibase-before-3.45.0-sql-injection-via-column-rename-ddl](https://www.vulncheck.com/advisories/budibase-before-3.45.0-sql-injection-via-column-rename-ddl)

## Related threats

- [Budibase cross-workspace privilege escalation in group apps endpoint](https://junglewise.ai/threats/cve-2026-100686-budibase-versions-before-3-45-0-fail-to-validate-per-app)