What is CVE-2026-44221?

CVE-2026-44221 is a critical-severity vulnerability in Arcadedata Arcadedb, classified under Incorrect Authorization. CVSS score: 9.0/10. Published 2026-05-12.

How severe is CVE-2026-44221?

Critical severity. CVSS v3 base score is 9.0 out of 10.

Auth bypass in Arcadedata Arcadedb

CVE-2026-44221

ArcadeDB is a Multi-Model DBMS. Prior to 2.6.4, authenticated users and API tokens scoped to a specific database could read, write, and mutate schema on any other database on the same server. Two distinct defects contributed: (1) ServerSec…

Vulnerability class: Broken Access Control

EPSS: 0.000 (2.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.

Affected products

Arcadedata Arcadedb — versions < 2.6.4

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-44221?: CVE-2026-44221 is a critical-severity vulnerability in Arcadedata Arcadedb, classified under Incorrect Authorization. CVSS score: 9.0/10. Published 2026-05-12.
How severe is CVE-2026-44221?: Critical severity. CVSS v3 base score is 9.0 out of 10.