---
id: CVE-2026-114056
title: ArcadeDB from 26.8.1 before 26.10.1 Authorization Bypass via ALTER TYPE WITH
summary: >-
  ArcadeDB from 26.8.1 before 26.10.1 contains an authorization bypass
  vulnerability that allows read-only users to modify edge type lightweight and
  unique schema flags without UPDATE_SCHEMA permission. Attackers can send a
  bare ALTER TYPE…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-862
vendor: ArcadeData
product: arcadedb
affected:
  - arcadedb >= 26.8.1 < 26.10.1
published: '2026-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T00:36:31.923Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-114056'
references:
  - url: >-
      https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-9c7g-grf7-j2r5
    label: GitHub Security Advisory (GHSA-9c7g-grf7-j2r5)
  - url: >-
      https://www.vulncheck.com/advisories/arcadedb-from-26.8.1-before-26.10.1-authorization-bypass-via-alter-type-with
    label: >-
      VulnCheck Advisory: ArcadeDB from 26.8.1 before 26.10.1 Authorization
      Bypass via ALTER TYPE WITH
tags:
  - cve.org
ingestedAt: '2026-10-21T01:37:08.041Z'
---

## Overview

ArcadeDB from 26.8.1 before 26.10.1 contains an authorization bypass vulnerability that allows read-only users to modify edge type lightweight and unique schema flags without UPDATE_SCHEMA permission. Attackers can send a bare ALTER TYPE edgeType WITH lightweight = true command over the HTTP, gRPC, or Bolt command API to persistently alter edge storage declarations.

## Affected

- `arcadedb >= 26.8.1 < 26.10.1`

## Remediation

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