---
id: CVE-2026-75850
title: >-
  ArcadeDB before 26.8.1 fails to bind the authenticated principal
  (setCurrentUser) on its batch and time-series HTTP handlers
summary: >-
  ArcadeDB before 26.8.1 fails to bind the authenticated principal
  (setCurrentUser) on its batch and time-series HTTP handlers. Because no
  principal is bound on the worker thread, the engine's fine-grained per-type
  ACL layer (LocalBucket.c…
severity: medium
cvss: 4.2
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N'
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-2026-75850'
references:
  - url: >-
      https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-c23x-pqcj-7hfm
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/arcadedb-before-per-type-acl-bypass-via-batch-handlers
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00207
epssPercentile: 0.09605
ingestedAt: '2026-09-08T21:11:12.280Z'
---

## Overview

ArcadeDB before 26.8.1 fails to bind the authenticated principal (setCurrentUser) on its batch and time-series HTTP handlers. Because no principal is bound on the worker thread, the engine's fine-grained per-type ACL layer (LocalBucket.checkPermissionsOnFile) does not execute for these handlers. In deployments that use per-type or per-group ACLs, a user with database access but only limited per-type permissions can read from and write to types they are not authorized to access by submitting requests to the batch/time-series endpoints. Deployments that rely solely on database-level access control are not affected.

## Remediation

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