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CVE-2026-75845— ArcadeDB 26.4.2 before 26.8.1 Authorization Bypass via set_server_setting

Quick assessment

Affected
ArcadeData arcadedb
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Arcade Data ArcadeDB是Arcade Data组织的一款高性能原生多模型数据库。 ArcadeData arcadedb 26.4.2至26.7.3版本存在权限许可和访问控制问题漏洞，该漏洞源于set_server_setting MCP服务器级工具的SetServerSettingTool.execute()方法仅检查全局allowAdmin标志而未检查调用者角色，可能导致经过身份验证的只读用户调用set_server_setting修改服务器GlobalConfiguration，从

CVSS 6.3 · Medium EPSS 0.21% · P11

Affected Version Matrix 2

VendorProduct Version RangeStatus
ArcadeData arcadedb 26.4.2< 26.8.1 affected
26.8.1 unaffected
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I. Basic Information for CVE-2026-75845

Vulnerability Information
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Vulnerability Title
ArcadeDB 26.4.2 before 26.8.1 Authorization Bypass via set_server_setting
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
ArcadeData arcadedb 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Arcade Data ArcadeDB是Arcade Data组织的一款高性能原生多模型数据库。 ArcadeData arcadedb 26.4.2至26.7.3版本存在权限许可和访问控制问题漏洞，该漏洞源于set_server_setting MCP服务器级工具的SetServerSettingTool.execute()方法仅检查全局allowAdmin标志而未检查调用者角色，可能导致经过身份验证的只读用户调用set_server_setting修改服务器GlobalConfiguration，从
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ArcadeData arcadedb 26.4.2 ~ 26.8.1 -

II. Public POCs for CVE-2026-75845

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III. Intelligence Information for CVE-2026-75845

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Vendor Advisories for CVE-2026-75845 (2)

Same Patch Batch · ArcadeData · 2026-08-18 · 14 CVEs total

CVE-2026-75843 9.9 CRITICAL ArcadeDB before 26.8.1 Privilege Escalation via gRPC Transaction
CVE-2026-75851 9.9 CRITICAL ArcadeDB before 26.8.1 Authentication Bypass via Async Command
CVE-2026-75854 9.8 CRITICAL ArcadeDB Redis Wire-Protocol Plugin Missing Authentication
CVE-2026-75852 9.8 CRITICAL ArcadeDB MongoDB wire protocol authentication bypass cross-database
CVE-2026-75853 8.8 HIGH ArcadeDB Gremlin Wire Protocol Authorization Bypass Cross-Database
CVE-2026-75855 8.7 HIGH ArcadeDB before 26.8.1 Path Traversal via create/drop database
CVE-2026-75842 7.7 HIGH ArcadeDB before 26.8.1 Arbitrary File Read via LOAD CSV
CVE-2026-75840 7.5 HIGH ArcadeDB before 26.8.1 Arbitrary File Read via Unescaped Regex
CVE-2026-75846 7.1 HIGH ArcadeDB before 26.8.1 Unauthorized Function Deletion via DELETE FUNCTION
CVE-2026-75844 7.1 HIGH ArcadeDB before 26.8.1 SSRF via IMPORT DATABASE validator bypass
CVE-2026-75841 4.3 MEDIUM ArcadeDB before 26.8.1 Denial of Service via range()
CVE-2026-75839 4.3 MEDIUM ArcadeDB before 26.8.1 Information Disclosure via Cluster Endpoints
CVE-2026-75850 4.2 MEDIUM ArcadeDB before 26.8.1 Per-Type ACL Bypass via Batch Handlers

IV. Related Vulnerabilities

Same product: arcadedb
Same vendor: ArcadeData
Same weakness: CWE-269

V. Comments for CVE-2026-75845

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