CVE-2026-68578 ArcadeDB before 26.7.3 Authentication Bypass via MCP Transport
Attackers with MCP access can bypass authentication to execute arbitrary code and modify data in ArcadeDB.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-68578?
CVE-2026-68578 is a high-severity authentication bypass vulnerability in ArcadeData arcadedb, published on 2 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
ArcadeDB versions before 26.7.3 fail to bind the authenticated principal in the MCP HTTP transport, causing all engine permission checks to silently pass as no-ops. Non-root MCP-allowed users can perform arbitrary database writes, DDL, schema mutations, and execute arbitrary JavaScript code via the query tool.
Weakness: CWE-306
Which versions are affected by CVE-2026-68578?
How do I fix CVE-2026-68578?
No fix has been published for CVE-2026-68578 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-68578 being exploited?
There is no known exploitation of CVE-2026-68578 in the wild and no public exploit code.
Sources
Also known as GHSA-6x73-v3rc-f57c, GHSA-hq22-48ph-vqch.