---
id: "CVE-2026-114056"
kind: "vulnerability"
aliases: ["CVE-2026-114056"]
title: "ArcadeDB: read-only users can alter edge type schema flags"
severity: "medium"
cvss: 5.3
epss: 0.00215
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["arcadedb", "databases", "package", "self-hosted"]
not_affected_if: ["default-config"]
published_at: "2026-10-21T01:17:28+00:00"
first_seen_at: "2026-10-23T21:57:27+00:00"
updated_at: "2026-10-25T04:22:24+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114056", "first_seen_at": "2026-10-23T21:57:27+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-114056", "first_seen_at": "2026-10-24T13:15:55+00:00"}]
---

# ArcadeDB: read-only users can alter edge type schema flags

ArcadeDB from 26.8.1 before 26.10.1 lets read-only users change edge type lightweight and unique schema flags without the UPDATE_SCHEMA permission. An attacker with read-only access can send a bare ALTER TYPE command over HTTP, gRPC or Bolt to persistently change how edge storage is declared.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed ArcadeDB version and whether it is in the range `26.8.1` to before `26.10.1`
- Review which accounts have read-only access on the ArcadeDB server, since those are the ones that can exploit this

## Fix

- Upgrade ArcadeDB to `26.10.1` or later
- Until upgraded, restrict read-only accounts on the HTTP, gRPC and Bolt APIs

## Timeline

- 2026-10-23T21:57:27+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-114056
- 2026-10-24T13:15:55+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-114056

## From the sources

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.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_