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Advisory record · GHSA-fxc7-fm93-6q77

ArcadeDB vulnerable to cross-database authorization bypass and unsecured newly-created databases

CVSS 9.0 CriticalCriticalEPSS 0.0034 · 27th percentile

Critical, because:

  • CVSS score 9.0: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 5 May 2026, 22:22 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
com.arcadedb:arcadedb-serverMaven>=21.10.1, <26.4.226.4.2
Identifiers
GHSA-fxc7-fm93-6q77 · CVE-2026-44221
Weakness (CWE)
CWE-863
Tags
Published
5 May 2026
Updated
3 Aug 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

ArcadeDB (com.arcadedb:arcadedb-server, Maven) versions from 21.10.1 before 26.4.2 are vulnerable. An authenticated user, or an API token scoped to one database, can read, write and change the schema of other databases on the same server, because database-level and record-level authorization can be bypassed; databases created through the server create command also have record-level authorization disabled. Upgrade to version 26.4.2.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.0 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0034, the 27th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:19 UTC First seen by agentprime
  2. 31 Oct 2026, 14:19 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.