CVE-2026-68578
ArcadeDB before 26.7.3 Authentication Bypass via MCP Transport
- State
- Published
- Severity
- 7.7 High
- Published
- Aug 2, 2026
- Updated
- Aug 3, 2026
- Reserved
- Jul 31, 2026
Description
ArcadeDB versions before 26.7.3 fail to bind the authenticated principal in the MCP HTTP transport, causing all engine permission checks to silently pass as no-ops. Non-root MCP-allowed users can perform arbitrary database writes, DDL, schema mutations, and execute arbitrary JavaScript code via the query tool.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.7 High | CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-306 Missing Authentication for Critical Function
Affected Products
| Product | Versions |
|---|---|
arcadedbArcadeData |
|
References
- GitHub Security Advisory (GHSA-6x73-v3rc-f57c)vendor-advisory
- VulnCheck Advisory: ArcadeDB before 26.7.3 Authentication Bypass via MCP Transportthird-party-advisory
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