CVE-2026-75843 ArcadeDB before 26.8.1 Privilege Escalation via gRPC Transaction
Authenticated users can escalate privileges to administrator by executing unrestricted JavaScript via gRPC transactions in ArcadeDB.
- 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-2026-75843?
CVE-2026-75843 is a critical vulnerability in ArcadeData arcadedb, published on 18 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
ArcadeDB before 26.8.1 fails to bind the authenticated principal on the gRPC transaction executor thread in beginTransaction, allowing authenticated readers to execute JavaScript commands without scripting authorization checks. Attackers can execute executeCommand with a transaction ID to run unrestricted JavaScript that creates server-wide administrator accounts.
Weakness: CWE-269
Which versions are affected by CVE-2026-75843?
How do I fix CVE-2026-75843?
No fix has been published for CVE-2026-75843 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-75843 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-75843 exists.
Sources
Also known as GHSA-p29f-345w-4qwf, GHSA-pgf7-648w-96c5.