High severity · published Sep 18, 2026
CVE-2026-93593
ArcadeDB before 26.9.1 TimeSeries ACL Bypass via Type Permission
8.1
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AR
arcadedb · ArcadeData
before 26.9.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93593
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-93593
github.com
https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-wjhv-79gv-2pqg
www.vulncheck.com
https://www.vulncheck.com/advisories/arcadedb-before-26.9.1-timeseries-acl-bypass-via-type-permission
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