CVE-2026-54076 ArcadeDB: Read-only users can mutate database schema (incomplete fix of CVE-2026-44221)
Authenticated read-only users can mutate database schema via HTTP endpoints due to missing authorization checks, potentially corrupting stored data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-54076?
CVE-2026-54076 is a high-severity missing authorization vulnerability in ArcadeData arcadedb, published on 15 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
ArcadeDB is a Multi-Model DBMS. Prior to 26.6.1, the fix for CVE-2026-44221 added an UPDATE_SCHEMA authorization check only to LocalDocumentType.createProperty, while the remaining public schema mutators in engine/src/main/java/com/arcadedb/schema/LocalDocumentType.java and engine/src/main/java/com/arcadedb/schema/LocalProperty.java remained unchecked. An authenticated identity, including a read-only API token without UPDATE_SCHEMA permission, can use DROP PROPERTY, ALTER TYPE, or ALTER PROPERTY through the database command/query HTTP endpoints to rename types, change inheritance, alter aliases or buckets, drop properties, and change property constraints. The issue does not directly disclose or write record data, but unauthorized schema mutation can corrupt the meaning of stored records and breach the documented permission model. This issue is fixed in version 26.6.1.
Which versions are affected by CVE-2026-54076?
2 open source packages ship an affected version, including com.arcadedb:arcadedb-engine.
| Package | Affected | Fixed in |
|---|---|---|
com.arcadedb:arcadedb-engine Maven | All versions | 26.6.1 |
com.arcadedb:arcadedb-engine Maven | All versions | 26.6.1 |
How do I fix CVE-2026-54076?
Upgrade com.arcadedb:arcadedb-engine to 26.6.1 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-54076 being exploited?
There is no known exploitation of CVE-2026-54076 in the wild and no public exploit code.
Sources
Also known as GHSA-vg6x-6pg9-6qwg.