Auth bypass in Arcadedata Arcadedb
CVE-2026-93593
ArcadeDB before 26.9.1 fails to enforce security-group types ACL entries for TimeSeries types because the ACL resolver builds permissions from bucket IDs, but TimeSeries types do not own normal record buckets. An authenticated low-privilege user can read or insert TimeSeries samples despite explicit deny rules by exploiting the missing type-name-based access check that causes permission lookups to fail open.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (30.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.2% 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
Weakness classification (CWE)
References
- github.com/ArcadeData/arcadedb/security/advisories/GHSA-wjhv-79gv-2pqg (vendor-advisory)
- www.vulncheck.com/advisories/arcadedb-before-26.9.1-timeseries-acl-bypass-via-t… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-93593?
- CVE-2026-93593 is a high-severity vulnerability in Arcadedata Arcadedb, classified under Incorrect Authorization. CVSS score: 8.1/10. Published 2026-09-18.
- How severe is CVE-2026-93593?
- High severity. CVSS v3 base score is 8.1 out of 10.