CVE-2026-93596

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.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-27vw-j8qc-5h7x
https://www.vulncheck.com/advisories/arcadedb-before-26.9.1-authorization-bypass-via-batch-edge-connect
https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-27vw-j8qc-5h7x

Configurations

No configuration.

History

18 Sep 2026, 18:18

Type	Values Removed	Values Added
References	~~() https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-27vw-j8qc-5h7x -~~	() https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-27vw-j8qc-5h7x -

18 Sep 2026, 14:19

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-18 14:19

Updated : 2026-09-18 18:18

NVD link : CVE-2026-93596

Mitre link : CVE-2026-93596

CVE.ORG link : CVE-2026-93596

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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