Description
ArcadeDB versions 26.4.2 through 26.7.3 contain an authorization bypass vulnerability in the set_server_setting MCP server-level tool. SetServerSettingTool.execute() gates only on the global allowAdmin flag and never checks the caller's role, so in an MCP deployment with allowAdmin=true and a non-root allowedUsers set, any authenticated read-only user can invoke set_server_setting to modify server GlobalConfiguration, enabling configuration tampering or denial of service. The issue is fixed in 26.8.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ArcadeData | arcadedb | 26.4.2 – < 26.8.1 | 26.8.1 |
References
- GitHub Security Advisory (GHSA-pff6-hp53-pj54) vendor-advisory
- VulnCheck Advisory: ArcadeDB 26.4.2 before 26.8.1 Authorization Bypass via set_server_setting third-party-advisory