# CVE-2026-88402: NocoBase SQL injection in checkSQL function

Source: https://junglewise.ai/threats/cve-2026-88402-a-sql-injection-vulnerability-in-the-checksql-function-of  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-21. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-88402 · Severity: critical · CVSS 9.8 · Published 2026-09-21

NocoBase is a low-code database platform that allows users to build databases and applications. A SQL injection vulnerability in the checkSQL validation function allows authenticated attackers to bypass safety checks and execute arbitrary SQL statements, potentially exposing, modifying, or deleting sensitive database information. The flaw exploits multi-statement SQL execution to hide dangerous keywords from validation checks.

Technologies: [Nocobase](https://junglewise.ai/threats/technologies/nocobase). Vendors: [NocoBase](https://junglewise.ai/threats/vendors/nocobase).

## Quick answers

**Is CVE-2026-88402 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-88402 being exploited in the wild.

**How severe is CVE-2026-88402?** Critical severity, with a CVSS score of 9.8, published 21 September 2026.

**Which products and versions are affected?** Nocobase 2.1.21.

**Is there a fix for CVE-2026-88402?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-88402 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-88402?** Check whether you run Nocobase 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

The checkSQL function in @nocobase/plugin-collection-sql splits input SQL by semicolons and validates only the first statement, allowing subsequent statements to bypass keyword filtering. Combined with hardcoded multipleStatements: true in MySQL/MariaDB dialects, authenticated attackers can inject DROP, DELETE, UPDATE, or other dangerous SQL commands after a valid SELECT statement to achieve arbitrary database operations including data exfiltration, modification, or deletion.

## Affected products

- NocoBase NocoBase 2.1.21

## Timeline

- 2026-09-07: disclosed: Vulnerability reported in GitHub issue
- 2026-09-21: advisory: CVE-2026-88402 published

## References

- [https://github.com/czx1111/cve/issues/6](https://github.com/czx1111/cve/issues/6)

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