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TI-2026-53091 Aliases CVE-2026-75845GHSA-2c26-2qqv-6r9c

ArcadeDB 26.4.2 before 26.8.1 Authorization Bypass via set_server_setting

Priority MEDIUM 57CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Privilege escalation
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-269.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00287 21st percentileScored 2026-11-07
Fix Fixed arcadedb (ArcadeData): 26.8.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ArcadeDataarcadedb26.4.2 to before 26.8.126.8.1Patch availableCNA
  • arcadedb VendorArcadeData Affected 26.4.2 to before 26.8.1 Fixed in 26.8.1 Patch available CNA

Remediation

  • Fix · CNA arcadedb (ArcadeData) Fixed in 26.8.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    ArcadeData arcadedb 26.8.1

    14 records Highest priority Priority HIGH 7 HIGH, 3 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2026-53098 ArcadeDB Redis Wire-Protocol Plugin Missing AuthenticationPriority HIGH 81
    • TI-2026-53086 ArcadeDB before 26.8.1 Arbitrary File Read via Unescaped RegexPriority HIGH 77
    • TI-2026-53095 ArcadeDB before 26.8.1 Authentication Bypass via Async CommandPriority HIGH 76
    Show all 14 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-75845
  2. 2026-10-03 Alias added: GHSA-2c26-2qqv-6r9c

References

Advisory 1

  • TI-2026-53098 ArcadeDB Redis Wire-Protocol Plugin Missing Authentication CVSS 4.0CRITICAL 9.3
  • TI-2026-53086 ArcadeDB before 26.8.1 Arbitrary File Read via Unescaped Regex CVSS 4.0HIGH 8.7
  • TI-2026-53095 ArcadeDB before 26.8.1 Authentication Bypass via Async Command CVSS 4.0CRITICAL 9.4
  • TI-2026-53089 ArcadeDB before 26.8.1 Privilege Escalation via gRPC Transaction CVSS 4.0CRITICAL 9.4
  • TI-2026-53097 ArcadeDB Gremlin Wire Protocol Authorization Bypass Cross-Database CVSS 4.0HIGH 8.7
  • TI-2026-63057 ArcadeDB before 26.9.1 TimeSeries ACL Bypass via Type Permission CVSS 4.0HIGH 8.6
See all 41 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences