CVE-2026-75845: Improper Privilege Management in ArcadeData arcadedb
ArcadeDB versions 26.4.2 through 26.7.3 have an authorization bypass vulnerability in the set_server_setting MCP server-level tool. The vulnerability allows any authenticated read-only user to modify server global configuration when the allowAdmin flag is true, due to insufficient role checks. This can lead to configuration tampering or denial of service. The issue is fixed in version 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 SetServerSettingTool.execute() method only checks the global allowAdmin flag and does not verify the caller's role. In MCP deployments with allowAdmin=true and a non-root allowedUsers set, any authenticated read-only user can invoke set_server_setting to modify the server's GlobalConfiguration. This enables unauthorized configuration changes or denial of service. The vulnerability is resolved in version 26.8.1.
Potential Impact
An authenticated user with read-only privileges can bypass intended authorization controls to modify server global settings. This can lead to configuration tampering or denial of service conditions on the affected server. The vulnerability does not require elevated privileges beyond authentication and is exploitable when allowAdmin is set to true.
Mitigation Recommendations
Upgrade to ArcadeDB version 26.8.1 or later where this vulnerability is fixed. Until then, consider disabling the allowAdmin flag or restricting authenticated user roles to prevent unauthorized access to set_server_setting. No other vendor advisory information is provided.
CVE-2026-75845: Improper Privilege Management in ArcadeData arcadedb
Description
ArcadeDB versions 26.4.2 through 26.7.3 have an authorization bypass vulnerability in the set_server_setting MCP server-level tool. The vulnerability allows any authenticated read-only user to modify server global configuration when the allowAdmin flag is true, due to insufficient role checks. This can lead to configuration tampering or denial of service. The issue is fixed in version 26.8.1.
CVSS v4.0
Score 5.3medium
Affected software
ArcadeData
arcadedb
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 SetServerSettingTool.execute() method only checks the global allowAdmin flag and does not verify the caller's role. In MCP deployments with allowAdmin=true and a non-root allowedUsers set, any authenticated read-only user can invoke set_server_setting to modify the server's GlobalConfiguration. This enables unauthorized configuration changes or denial of service. The vulnerability is resolved in version 26.8.1.
Potential Impact
An authenticated user with read-only privileges can bypass intended authorization controls to modify server global settings. This can lead to configuration tampering or denial of service conditions on the affected server. The vulnerability does not require elevated privileges beyond authentication and is exploitable when allowAdmin is set to true.
Mitigation Recommendations
Upgrade to ArcadeDB version 26.8.1 or later where this vulnerability is fixed. Until then, consider disabling the allowAdmin flag or restricting authenticated user roles to prevent unauthorized access to set_server_setting. No other vendor advisory information is provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-18T10:59:33.701Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a844367c6e8be0332229756
Added to database: 08/18/2026, 11:35:03 UTC
Last enriched: 09/11/2026, 22:19:23 UTC
Last updated: 10/02/2026, 02:46:06 UTC
Views: 48
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