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GHSA-vg6x-6pg9-6qwg

HighCVSS 8.1 / 10
Published Jul 16, 2026·Last modified Jul 16, 2026
Affected Components(1)
Maven logocom.arcadedb/arcadedb-engine
< 26.6.1
Description

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).

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Risk Scores
Base Score
8.1

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.

Threat Intelligence
7.4

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
0.50%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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