---
id: CVE-2026-75853
title: >-
  ArcadeDB's Gremlin wire-protocol plugin (com.arcadedb:arcadedb-gremlin) in
  versions <= 26.7.3 enforces authentication (SASL PLAIN) but performs no
  authorization: it never checks database access permissions
  (canAccessToDatabase) and never…
summary: >-
  ArcadeDB's Gremlin wire-protocol plugin (com.arcadedb:arcadedb-gremlin) in
  versions <= 26.7.3 enforces authentication (SASL PLAIN) but performs no
  authorization: it never checks database access permissions
  (canAccessToDatabase) and never…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-862
published: '2026-08-18'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:32:39.347'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75853'
references:
  - url: >-
      https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-c287-v325-j5jx
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/arcadedb-gremlin-wire-protocol-authorization-bypass-cross-database
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-c287-v325-j5jx
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00494
epssPercentile: 0.41522
ingestedAt: '2026-09-08T21:11:12.280Z'
---

## Overview

ArcadeDB's Gremlin wire-protocol plugin (com.arcadedb:arcadedb-gremlin) in versions <= 26.7.3 enforces authentication (SASL PLAIN) but performs no authorization: it never checks database access permissions (canAccessToDatabase) and never binds the authenticated principal into the engine. As a result, any valid server credential — even one provisioned for zero or one unrelated database — can read, write, and drop data in any database on the server by selecting a target database via a traversal-source alias, completely bypassing the engine's per-type/read-only/UPDATE_SCHEMA ACLs. The issue is fixed in version 26.8.1.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.