CVE-2026-75845

Summary

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 Software

Weaknesses

• CWE-269: Improper Privilege Management

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-pff6-hp53-pj54

References

• https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-pff6-hp53-pj54
• https://www.vulncheck.com/advisories/arcadedb-before-authorization-bypass-via-set-server-setting

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