CVE-2026-53556 SQLBot: Authenticated SQL Injection in previewData Resulting in Arbitrary File Read
Authenticated attackers can exploit SQL injection in the previewData endpoint to read arbitrary files from the server filesystem via PostgreSQL superuser privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-53556?
CVE-2026-53556 is a medium-severity SQL injection vulnerability in dataease SQLBot, published on 17 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
SQLBot is an intelligent Text-to-SQL system based on large language models and RAG. Prior to 1.9.0, the POST /api/v1/datasource/previewData endpoint in backend/apps/datasource/crud/datasource.py incorporates the client-controlled table_name value into generated SQL without safe identifier handling. An authenticated user can configure a datasource for SQLBot's internal PostgreSQL service and submit a crafted table_name that remains a SELECT operation under the read-only policy while invoking pg_read_file(), pg_read_binary_file(), or pg_ls_dir(). In the default tested trusted loopback authentication configuration, the internal connection accepts invalid credentials and executes with PostgreSQL superuser privileges, allowing filesystem content such as /etc/hosts and /etc/passwd to be returned in the previewData API response and potentially exposing configuration, credentials, authentication secrets, and source code. This issue is fixed in version 1.9.0.
Weakness: CWE-89
Which versions are affected by CVE-2026-53556?
How do I fix CVE-2026-53556?
No fix has been published for CVE-2026-53556 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-53556 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-53556 exists.
Sources
Also known as GHSA-vwjq-5h4h-x8g5.