ArcadeData ArcadeDB up to 26.9.0 Out Edges In Edges Buckets improper authorization

Summaryinfo

A vulnerability described as problematic has been identified in ArcadeData ArcadeDB up to 26.9.0. Affected by this issue is some unknown functionality of the component Out Edges In Edges Buckets. The manipulation results in improper authorization. This vulnerability is identified as CVE-2026-93596. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in ArcadeData ArcadeDB up to 26.9.0. Affected is an unknown code block of the component Out Edges In Edges Buckets. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on integrity. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-93596 since 09/18/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1548.002.

Upgrading to version 26.9.1 eliminates this vulnerability.

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Productinfo

Vendor

• ArcadeData

Name

• ArcadeDB

Version

• 26.0
• 26.1
• 26.2
• 26.3
• 26.4
• 26.5
• 26.6
• 26.7
• 26.8
• 26.9.0

Website

• Product: https://github.com/ArcadeData/arcadedb/

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