CVE-2026-67356: ArcadeDB before 26.7.3 Privilege Escalation via JavaScript Trigger
ArcadeDB before 26.7.3 binds the real LocalDatabase object into JavaScript trigger contexts with HostAccess.ALL, allowing schema-admins to call getSecurity().createUser() without permission checks. Attackers with UPDATESCHEMA permission can create triggers that execute JavaScript to create server-wide admin users, escalating privileges beyond their authorization level.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
ArcadeDBto a version that resolves this vulnerability.Fixed in 26.7.3 - Compensating control
Restrict who can create/modify JavaScript triggers in ArcadeDB to users who are not permitted UPDATE_SCHEMA (limit access to schema-admin/UPDATE_SCHEMA to prevent creation of JavaScript triggers that can call createUser via the bound LocalDatabase object).
Event History
Frequently Asked Questions
What is the severity of CVE-2026-67356?
CVE-2026-67356 has a high severity score of 8.8.
What type of vulnerability is CVE-2026-67356?
CVE-2026-67356 is a privilege escalation vulnerability that affects ArcadeDB.
How do I fix CVE-2026-67356?
To fix CVE-2026-67356, upgrade ArcadeDB to version 26.7.3 or later.
Who is affected by CVE-2026-67356?
Users with UPDATE_SCHEMA permission in ArcadeDB prior to version 26.7.3 are affected by CVE-2026-67356.
What can attackers do with CVE-2026-67356?
Attackers can exploit CVE-2026-67356 to create users without permission checks through JavaScript triggers.