Auth bypass in Arcadedata Arcadedb
CVE-2026-75852
ArcadeDB versions before 26.8.1 fail to enforce SASL authentication on data commands in the MongoDB wire-protocol plugin. Unauthenticated attackers can issue insert, find, update, delete, and create commands against any database by connecting to port 27017 without credentials.
Vulnerability class: Broken Authentication
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.007 (49.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.007 · change: +0.002
Affected products
Weakness classification (CWE)
References
- github.com/ArcadeData/arcadedb/security/advisories/GHSA-fq9c-x968-g278 (vendor-advisory)
- www.vulncheck.com/advisories/arcadedb-mongodb-wire-protocol-authentication-bypa… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-75852?
- CVE-2026-75852 is a critical-severity vulnerability in Arcadedata Arcadedb, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-08-18.
- How severe is CVE-2026-75852?
- Critical severity. CVSS v3 base score is 9.8 out of 10.