CVE-2026-73408 Budibase: MySQL DESCRIBE Backtick Injection via multipleStatements in Database Connector
Attacker can execute arbitrary SQL via stacked queries in table names during schema discovery, requiring admin interaction.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-73408?
CVE-2026-73408 is a high-severity SQL injection vulnerability in budibase, published on 13 Aug 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Budibase is an open-source low-code platform. Prior to 3.39.18, packages/server/src/integrations/mysql.ts enabled multipleStatements and inserted an unescaped tableName into a DESCRIBE statement. An attacker able to create a MySQL table with a backtick and stacked statement in its name could wait for a Budibase administrator to run schema discovery, causing the second statement to execute. The fix applies quoteMySqlIdentifier before constructing the query. This issue is fixed in version 3.39.18.
Weakness: CWE-89
Which versions are affected by CVE-2026-73408?
2 open source packages ship an affected version, including @budibase/server.
| Package | Affected | Fixed in |
|---|---|---|
@budibase/server npm | All versions to 3.38.1 | None |
@budibase/server npm | All versions to 3.38.1 | None |
How do I fix CVE-2026-73408?
No fix has been published for CVE-2026-73408 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-2026-73408 being exploited?
There is no known exploitation of CVE-2026-73408 in the wild and no public exploit code.
Sources
Also known as GHSA-2xgg-r2wc-c5r2.