---
id: CVE-2026-93593
title: >-
  ArcadeDB before 26.9.1 fails to enforce security-group types ACL entries for
  TimeSeries types because the ACL resolver builds permissions from bucket IDs,
  but TimeSeries types do not own normal record buckets
summary: >-
  ArcadeDB before 26.9.1 fails to enforce security-group types ACL entries for
  TimeSeries types because the ACL resolver builds permissions from bucket IDs,
  but TimeSeries types do not own normal record buckets. An authenticated
  low-privil…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-863
vendor: ArcadeData
product: arcadedb
affected:
  - arcadedb < 26.9.1
published: '2026-09-18'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T15:17:23.783'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93593'
references:
  - url: >-
      https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-wjhv-79gv-2pqg
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/arcadedb-before-26.9.1-timeseries-acl-bypass-via-type-permission
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-wjhv-79gv-2pqg
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00363
epssPercentile: 0.27399
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-22T14:20:30.640418Z'
ingestedAt: '2026-09-18T13:41:41.665Z'
---

## Overview

ArcadeDB before 26.9.1 fails to enforce security-group types ACL entries for TimeSeries types because the ACL resolver builds permissions from bucket IDs, but TimeSeries types do not own normal record buckets. An authenticated low-privilege user can read or insert TimeSeries samples despite explicit deny rules by exploiting the missing type-name-based access check that causes permission lookups to fail open.

## Remediation

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