CVE-2026-75845CWE-269privilege-escalation

CVE-2026-75845

Medium · published August 18, 2026

CVSS v3.1
6.3
EPSS
0%
Percentile
20.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
EPSS
0.00287 · 20.0th percentile
Weakness
CWE-269 · Improper Privilege Management
Published
2026-08-18T16:19Z
References (3)
https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-pff6-hp53-pj54 · [email protected]https://www.vulncheck.com/advisories/arcadedb-before-authorization-bypass-via-set-server-setting · [email protected]https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-pff6-hp53-pj54 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 18 AUG 11:19Z
    ArcadeDB 26.4.2 before 26.8.1 Authorization Bypass via set_server_setting
    cvelistv5