What is CVE-2026-67342?

CVE-2026-67342 is a critical-severity vulnerability in Arcadedata Arcadedb, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.8/10. Published 2026-08-01.

How severe is CVE-2026-67342?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Arcadedata Arcadedb

CVE-2026-67342

ArcadeDB versions before 26.7.2 contain an authorization bypass vulnerability in HTTP handlers for time series, batch, Prometheus, and Grafana endpoints that fail to validate database access permissions. Attackers can access and modify databases they are not authorized to use by directly calling affected endpoints with arbitrary database parameters.

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.003 (24.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Arcadedata Arcadedb — versions 0, 26.7.2

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-67342?: CVE-2026-67342 is a critical-severity vulnerability in Arcadedata Arcadedb, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.8/10. Published 2026-08-01.
How severe is CVE-2026-67342?: Critical severity. CVSS v3 base score is 9.8 out of 10.