What is CVE-2026-68578?

CVE-2026-68578 is a high-severity vulnerability in Arcadedata Arcadedb, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-08-02.

How severe is CVE-2026-68578?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Arcadedata Arcadedb

CVE-2026-68578

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.

Vulnerability class: Broken Authentication

Published 2026-08-02 · last modified 2026-10-23.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (30.1th percentile), scored 2026-10-31.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Arcadedata Arcadedb — versions 0, 26.7.3

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

github.com/ArcadeData/arcadedb/security/advisories/GHSA-6x73-v3rc-f57c (vendor-advisory)
www.vulncheck.com/advisories/arcadedb-authentication-bypass-via-mcp-transport (third-party-advisory)

Frequently asked questions

What is CVE-2026-68578?: CVE-2026-68578 is a high-severity vulnerability in Arcadedata Arcadedb, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-08-02.
How severe is CVE-2026-68578?: High severity. CVSS v3 base score is 7.5 out of 10.