Vulnerability · Published Sep 18, 2026 · Assigned by VulnCheck
CVE-2026-93596ArcadeDB before 26.9.1 Authorization Bypass via Batch Edge Connect
Medium 4.3
In plain English
A medium-severity missing authorization in arcadedb from ArcadeData. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).
Official description
ArcadeDB before 26.9.1 (com.arcadedb:arcadedb-engine <= 26.8.1) fails to bind the authenticated principal onto the DatabaseAsyncTransaction async worker threads used by the parallel edge-connect phase of POST /api/v1/batch/{database}. Because those workers have no current user, LocalDatabase.checkPermissionsOnFile returns early and allows the write, bypassing per-type CREATE_RECORD/UPDATE_RECORD ACL enforcement. In deployments that rely on per-type or per-group ACLs, an authenticated low-privilege user holding CREATE_RECORD on an edge type E but with CREATE_RECORD/UPDATE_RECORD revoked on a vertex type V can submit a graph edge-load batch request (with parallelFlush at its default value of true) and durably append edges to protected vertices of type V by writing records into V's <V>_out_edges/<V>_in_edges buckets, resulting in unauthorized modification of graph adjacency. Setting parallelFlush=false causes the request to be correctly rejected. This is an incomplete fix of GHSA-c23x-pqcj-7hfm, which bound the principal only on the HTTP handler thread.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ArcadeData | arcadedb | 0 – before 26.9.1 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
References
- GitHub Security Advisory (GHSA-27vw-j8qc-5h7x) vendor-advisory
- VulnCheck Advisory: ArcadeDB before 26.9.1 Authorization Bypass via Batch Edge Connect third-party-advisory