CVE-2026-75845: Improper Privilege Management in ArcadeData arcadedb
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.
AI Analysis
Technical Summary
ArcadeDB versions 26.4.2 through 26.7.3 contain an authorization bypass vulnerability in the set_server_setting MCP server-level tool. The method SetServerSettingTool.execute() only checks the global allowAdmin flag and does not verify the caller's role. In deployments where allowAdmin=true and a non-root allowedUsers set is configured, any authenticated read-only user can invoke set_server_setting to modify the server's GlobalConfiguration. This can enable unauthorized configuration changes or denial of service. The vulnerability is fixed in version 26.8.1.
Potential Impact
An authenticated user with read-only privileges can bypass intended authorization controls to modify server global configuration settings. This can lead to unauthorized configuration tampering or denial of service conditions on the affected server.
Mitigation Recommendations
Upgrade to ArcadeDB version 26.8.1 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor advisory indicating the fix in 26.8.1. Until upgraded, consider restricting the allowAdmin flag or limiting authenticated user roles to prevent unauthorized invocation of set_server_setting.
CVE-2026-75845: Improper Privilege Management in ArcadeData arcadedb
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.
CVSS v4.0
Score 5.3medium
Affected software
pkg:github/arcadedata/arcadedbRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
ArcadeDB versions 26.4.2 through 26.7.3 contain an authorization bypass vulnerability in the set_server_setting MCP server-level tool. The method SetServerSettingTool.execute() only checks the global allowAdmin flag and does not verify the caller's role. In deployments where allowAdmin=true and a non-root allowedUsers set is configured, any authenticated read-only user can invoke set_server_setting to modify the server's GlobalConfiguration. This can enable unauthorized configuration changes or denial of service. The vulnerability is fixed in version 26.8.1.
Potential Impact
An authenticated user with read-only privileges can bypass intended authorization controls to modify server global configuration settings. This can lead to unauthorized configuration tampering or denial of service conditions on the affected server.
Mitigation Recommendations
Upgrade to ArcadeDB version 26.8.1 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor advisory indicating the fix in 26.8.1. Until upgraded, consider restricting the allowAdmin flag or limiting authenticated user roles to prevent unauthorized invocation of set_server_setting.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-18T10:59:33.701Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a844367c6e8be0332229756
Added to database: 08/18/2026, 11:35:03 UTC
Last enriched: 08/18/2026, 11:50:29 UTC
Last updated: 08/18/2026, 15:19:59 UTC
Views: 5
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