Authorization Bypass Vulnerability in ArcadeDB by ArcadeData
CVE-2026-75845

5.3MEDIUM

Key Information:

Vendor

Arcadedata

Status
Arcadedb
Vendor
CVE Published:
18 August 2026

What is CVE-2026-75845?

In ArcadeDB versions 26.4.2 through 26.7.3, an authorization bypass flaw exists in the set_server_setting MCP server-level tool. This vulnerability allows authenticated read-only users to invoke the set_server_setting method and alter the server's GlobalConfiguration without proper role verification, leading to potential configuration tampering or denial of service. The flaw arises from the tool's reliance on the global allowAdmin flag without validating the user's role, thus creating security risks in deployments where allowAdmin is enabled and a non-root allowedUsers set is defined. This issue has been resolved in version 26.8.1.

Affected Version(s)

arcadedb 26.4.2 < 26.8.1

arcadedb 26.8.1

References

https://github.com/ArcadeData/arcadedb/security/advisorie...
vendor-advisory
https://www.vulncheck.com/advisories/arcadedb-before-auth...
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

dapickle
.