CVE-2026-44221: Arcadedb server ArcadeDB Vulnerable To Cross-database Authorization Vulnerability

CRITICAL
Advisory Identifier: GHSA-fxc7-fm93-6q77
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CVSS 9.0
CWE-863
Published
Advisory Summary

CVE-2026-44221 is a CRITICAL (CVSS 9.0) arcadedb vulnerable to cross-database authorization vulnerability (CWE-863: Incorrect Authorization) affecting Arcadedb server libraries in the Maven ecosystem. The issue involves arcadedb vulnerable to cross-database authorization bypass and unsecured newly-created databases. Remediation is available by upgrading affected packages to version 26.4.2.

CVE-2026-44221 at a Glance

CVE Identifier CVE-2026-44221
GHSA Identifier GHSA-fxc7-fm93-6q77
Severity CRITICAL
CVSS v3.1 Base Score 9.0
CWE Classification CWE-863: Incorrect Authorization
Affected Product Arcadedb server
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.0

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-44221

To remediate this vulnerability, upgrade all affected Arcadedb server dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

com.arcadedb:arcadedb-server fixed: 26.4.2 
<dependency>
    <groupId>com.arcadedb</groupId>
    <artifactId>arcadedb-server</artifactId>
    <version>26.4.2</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=com.arcadedb

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-44221, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.arcadedb

Analyze the terminal output to locate any version of Arcadedb server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 26.4.2), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.arcadedb command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Arcadedb server, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact Authenticated users and API tokens scoped to a specific database could read, write, and mutate schema on any other database on the same server. Two distinct defects contributed: (1) ServerSecurityUser.getDatabaseUser() returned a DB user with an uninitialized fileAccessMap, which requestAccessOnFile treated as allow-all; (2) ArcadeDBServer.createDatabase() omitted factory.setSecurity(...) so any database created via POST /api/v1/server {"command":"create database X"} had its entire record-level authorization system silently disabled. In combination, record-level and database-level authorization could be bypassed by any authenticated principal. ### Patches Upgrade to version 26.4.2 ### Resources https://github.com/ArcadeData/arcadedb/commit/04110c06315da55604ac107f71fe7182f3a3deb8

CVE-2026-44221 Affected Arcadedb server Versions

1 component(s)
Fixed Versions:
26.4.2
Product / Package Ecosystem Affected Versions Fixed Version
com.arcadedb:arcadedb-server
maven/com.arcadedb/arcadedb-server
Maven
≥ 21.10.1
< 26.4.2
26.4.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-fxc7-fm93-6q77
NVD — CVE-2026-44221 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44221
Security Fix Commit FIX COMMIT
https://github.com/ArcadeData/arcadedb/commit/04110c06315da55604ac107f71fe7182f3a3deb8
Security Fix Commit FIX COMMIT
https://github.com/ArcadeData/arcadedb/commit/9e708f116b
Arcadedb server Source Repository REPOSITORY
https://github.com/ArcadeData/arcadedb

Frequently Asked Questions

What is CVE-2026-44221?
CVE-2026-44221 is a security vulnerability in Arcadedb server involving ArcadeDB vulnerable to cross-database authorization bypass and unsecured newly-created databases under CWE-863: Incorrect Authorization.
Which Arcadedb server versions are affected?
Affected versions include releases prior to 26.4.2 across affected packages: com.arcadedb:arcadedb-server.
What version fixes CVE-2026-44221?
Upgrading to 26.4.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is arcadedb-server affected?
Yes, com.arcadedb:arcadedb-server is affected in releases prior to 26.4.2. Upgrade your dependency to 26.4.2 or later.
What is the CVSS score of CVE-2026-44221?
CVE-2026-44221 has a CVSS v3.1 base score of 9.0 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2026-44221?
CVE-2026-44221 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Maven dependencies for CVE-2026-44221?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.arcadedb'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-fxc7-fm93-6q77",
  "modified" : "2026-08-03T20:40:41Z",
  "published" : "2026-05-05T22:22:22Z",
  "aliases" : [ "CVE-2026-44221" ],
  "summary" : "ArcadeDB vulnerable to cross-database authorization bypass and unsecured newly-created databases",
  "details" : "### Impact\nAuthenticated users and API tokens scoped to a specific database could read, write, and mutate schema on any other database on the same server. Two distinct defects contributed: (1) ServerSecurityUser.getDatabaseUser() returned a DB user with an uninitialized fileAccessMap, which requestAccessOnFile treated as allow-all; (2) ArcadeDBServer.createDatabase() omitted factory.setSecurity(...) so any database created via POST /api/v1/server {\"command\":\"create database X\"} had its entire record-level authorization system silently disabled. In combination, record-level and database-level authorization could be bypassed by any authenticated principal.\n\n### Patches\nUpgrade to version 26.4.2\n\n### Resources\n\nhttps://github.com/ArcadeData/arcadedb/commit/04110c06315da55604ac107f71fe7182f3a3deb8",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.arcadedb:arcadedb-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "21.10.1"
      }, {
        "fixed" : "26.4.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-fxc7-fm93-6q77"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-44221"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ArcadeData/arcadedb/commit/04110c06315da55604ac107f71fe7182f3a3deb8"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ArcadeData/arcadedb/commit/9e708f116b"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ArcadeData/arcadedb"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-05T22:22:22Z",
    "nvd_published_at" : "2026-05-12T20:16:43Z"
  }
}