CVE-2026-75839 ArcadeDB before 26.8.1 Information Disclosure via Cluster Endpoints
Authenticated users in ArcadeDB HA clusters can access cluster endpoints to enumerate database names and metadata, leading to cross-database information disclosure.
- 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-2026-75839?
CVE-2026-75839 is a medium-severity 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 (com.arcadedb:arcadedb-server) versions <= 26.7.3 contain an insecure direct object reference (IDOR) vulnerability in the Raft cluster-info endpoints (GetClusterHandler and PostBootstrapStateHandler), which authenticate but do not authorize access. On an ArcadeDB HA cluster (only reachable when arcadedb.ha.enabled is set and the ha-raft module is loaded), any authenticated user — including one granted access to only one database or none — can enumerate the full server database registry and retrieve per-database metadata such as database names, last transaction IDs, bootstrap fingerprints, and peer/leader cluster topology, resulting in cross-database information disclosure. Fixed in 26.8.1.
Weakness: CWE-200
Which versions are affected by CVE-2026-75839?
How do I fix CVE-2026-75839?
No fix has been published for CVE-2026-75839 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-75839 being exploited?
There is no known exploitation of CVE-2026-75839 in the wild and no public exploit code.
Sources
Also known as GHSA-5g3q-578q-gf3m, GHSA-79wq-w74x-74ch.