Vulnerability-Lookup

CVE-2026-54076 (GCVE-0-2026-54076)

Vulnerability from cvelistv5 – Published: 2026-09-15 15:16 – Updated: 2026-09-15 17:12

Title

ArcadeDB: Read-only users can mutate database schema (incomplete fix of CVE-2026-44221)

Summary

ArcadeDB is a Multi-Model DBMS. Prior to 26.6.1, the fix for CVE-2026-44221 added an UPDATE_SCHEMA authorization check only to LocalDocumentType.createProperty, while the remaining public schema mutators in engine/src/main/java/com/arcadedb/schema/LocalDocumentType.java and engine/src/main/java/com/arcadedb/schema/LocalProperty.java remained unchecked. An authenticated identity, including a read-only API token without UPDATE_SCHEMA permission, can use DROP PROPERTY, ALTER TYPE, or ALTER PROPERTY through the database command/query HTTP endpoints to rename types, change inheritance, alter aliases or buckets, drop properties, and change property constraints. The issue does not directly disclose or write record data, but unauthorized schema mutation can corrupt the meaning of stored records and breach the documented permission model. This issue is fixed in version 26.6.1.

Severity

8.1 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-15 17:11 UTC

CWE

CWE-862 - Missing Authorization
CWE-863 - Incorrect Authorization

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/ArcadeData/arcadedb/security/a…	x_refsource_CONFIRM
https://github.com/ArcadeData/arcadedb/pull/4423	x_refsource_MISC
https://github.com/ArcadeData/arcadedb/commit/2ee…	x_refsource_MISC
https://github.com/ArcadeData/arcadedb/releases/t…	x_refsource_MISC

Impacted products

2 products

Vendor	Product	Version	CPE status
ArcadeData	arcadedb	Affected: < 26.6.1	guessed
com.arcadedb	arcadedb-engine	Affected: < 26.6.1	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-54076

Vulnerability from fkie_nvd - Published: 2026-09-15 16:17 - Updated: 2026-09-15 18:17

Severity

8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/ArcadeData/arcadedb/commit/2ee76fe442b974b2482f1e9eddd1ab429bcac614
	security-advisories@github.com	https://github.com/ArcadeData/arcadedb/pull/4423
	security-advisories@github.com	https://github.com/ArcadeData/arcadedb/releases/tag/26.6.1
	security-advisories@github.com	https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-vg6x-6pg9-6qwg

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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GHSA-VG6X-6PG9-6QWG

Vulnerability from github – Published: 2026-07-16 20:08 – Updated: 2026-07-16 20:08

Summary

ArcadeDB: Read-only users can mutate database schema (incomplete fix of CVE-2026-44221)

Details

Impact

The fix for CVE-2026-44221 (GHSA-fxc7-fm93-6q77) added an UPDATE_SCHEMA authorization check to a single schema-mutating method (LocalDocumentType.createProperty). The remaining public schema mutators were left unchecked, so an authenticated identity (including a read-only API token) that lacks the UPDATE_SCHEMA permission could still mutate the database schema on its own database:

DROP PROPERTY <type>.<property>
ALTER TYPE <name> SUPERTYPE +<other> / -<other> (change the inheritance hierarchy)
ALTER TYPE <name> NAME <newName> (rename a type)
type alias and bucket changes
ALTER PROPERTY <type>.<property> ... (MANDATORY, READONLY, NOTNULL, MIN, MAX, REGEXP, DEFAULT, OF, CUSTOM) — the LocalProperty setters had no check at all

This does not directly disclose or write record data, but it corrupts the meaning of every stored record and breaches the documented permission model, which advertises UPDATE_SCHEMA as the gating right for schema mutation.

Affected component

Engine schema layer: engine/src/main/java/com/arcadedb/schema/LocalDocumentType.java and engine/src/main/java/com/arcadedb/schema/LocalProperty.java, reachable via the SQL DROP PROPERTY, ALTER TYPE, and ALTER PROPERTY statements over the database command/query HTTP endpoints.

Patches

Every public schema-mutating method on LocalDocumentType and LocalProperty now enforces checkPermissionsOnDatabase(UPDATE_SCHEMA) via a shared helper. The check is a no-op in embedded mode and in system contexts with no bound user (schema load at startup, HA replication apply), so internal paths and administrators are unaffected.

Workarounds

Grant write access only to trusted users and API tokens; treat all schema DDL as administrator-only at the application layer until upgraded.

Resources

Incomplete-fix sibling of CVE-2026-44221 / GHSA-fxc7-fm93-6q77.

Credit

Reported by Kai Aizen (SnailSploit).

Severity

8.1 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.arcadedb:arcadedb-engine"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "26.6.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-54076"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862",
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-16T20:08:24Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\n\nThe fix for CVE-2026-44221 (GHSA-fxc7-fm93-6q77) added an `UPDATE_SCHEMA` authorization check to a single schema-mutating method (`LocalDocumentType.createProperty`). The remaining public schema mutators were left unchecked, so an authenticated identity (including a **read-only API token**) that lacks the `UPDATE_SCHEMA` permission could still mutate the database schema on its own database:\n\n- `DROP PROPERTY \u003ctype\u003e.\u003cproperty\u003e`\n- `ALTER TYPE \u003cname\u003e SUPERTYPE +\u003cother\u003e` / `-\u003cother\u003e` (change the inheritance hierarchy)\n- `ALTER TYPE \u003cname\u003e NAME \u003cnewName\u003e` (rename a type)\n- type alias and bucket changes\n- `ALTER PROPERTY \u003ctype\u003e.\u003cproperty\u003e ...` (MANDATORY, READONLY, NOTNULL, MIN, MAX, REGEXP, DEFAULT, OF, CUSTOM) \u2014 the `LocalProperty` setters had no check at all\n\nThis does not directly disclose or write record data, but it corrupts the meaning of every stored record and breaches the documented permission model, which advertises `UPDATE_SCHEMA` as the gating right for schema mutation.\n\n### Affected component\n\nEngine schema layer: `engine/src/main/java/com/arcadedb/schema/LocalDocumentType.java` and `engine/src/main/java/com/arcadedb/schema/LocalProperty.java`, reachable via the SQL `DROP PROPERTY`, `ALTER TYPE`, and `ALTER PROPERTY` statements over the database command/query HTTP endpoints.\n\n### Patches\n\nEvery public schema-mutating method on `LocalDocumentType` and `LocalProperty` now enforces `checkPermissionsOnDatabase(UPDATE_SCHEMA)` via a shared helper. The check is a no-op in embedded mode and in system contexts with no bound user (schema load at startup, HA replication apply), so internal paths and administrators are unaffected.\n\n### Workarounds\n\nGrant write access only to trusted users and API tokens; treat all schema DDL as administrator-only at the application layer until upgraded.\n\n### Resources\n\nIncomplete-fix sibling of CVE-2026-44221 / GHSA-fxc7-fm93-6q77.\n\n### Credit\n\nReported by Kai Aizen (SnailSploit).",
  "id": "GHSA-vg6x-6pg9-6qwg",
  "modified": "2026-07-16T20:08:24Z",
  "published": "2026-07-16T20:08:24Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-vg6x-6pg9-6qwg"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ArcadeData/arcadedb"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ArcadeData/arcadedb/releases/tag/26.6.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ArcadeDB: Read-only users can mutate database schema (incomplete fix of CVE-2026-44221)"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

CVE-2026-54076 (GCVE-0-2026-54076)

FKIE_CVE-2026-54076

GHSA-VG6X-6PG9-6QWG

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