CVE-2026-93593

ArcadeDB before 26.9.1 TimeSeries ACL Bypass via Type Permission

HIGH
8.1
CVSS Score
Published: September 18, 2026 at 01:20 PM UTC
Updated: September 22, 2026 at 03:17 PM UTC
1 product affected across 1 vendorArcadeDB

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Severity
HIGH8.1
Exploit prediction
EPSS 0.4%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 26.9.1
Vendor states this is fixed in 26.9.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-863

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