CVE-2026-67344 ArcadeDB before 26.7.2 Authentication Bypass via ALTER TYPE
Authenticated users with read-only access can bypass schema update permissions to modify database type metadata and routing strategies.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-67344?
CVE-2026-67344 is a high-severity missing authorization vulnerability in ArcadeData arcadedb, published on 1 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ArcadeDB before 26.7.2 fails to enforce the UPDATE_SCHEMA database permission on the ALTER TYPE ... CUSTOM and ALTER TYPE ... BUCKETSELECTIONSTRATEGY SQL operations, which map to setCustomValue and setBucketSelectionStrategy in LocalDocumentType. An authenticated user with only read access (e.g., a read-only API token) can submit these ALTER TYPE statements via the HTTP command endpoint to mutate a type's custom schema metadata and bucket-selection strategy, bypassing the documented updateSchema permission boundary and potentially corrupting schema metadata and record routing.
Weakness: CWE-862
Which versions are affected by CVE-2026-67344?
How do I fix CVE-2026-67344?
No fix has been published for CVE-2026-67344 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-67344 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67344 exists.
Sources
Also known as GHSA-8vr5-263f-x5r3, GHSA-qwhj-f36r-39x7.