ArcadeDB before 26.9.1 TimeSeries ACL Bypass via Type Permission (CVE-2026-93593) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-93593

ArcadeDB before 26.9.1 TimeSeries ACL Bypass via Type Permission

Answer in brief

CVE-2026-93593 records a Unknown severity vulnerability in ArcadeDB before 26.9.1 TimeSeries ACL Bypass via Type Permission. The current sources do not mark it as known exploited. The current feed maps ArcadeData/arcadedb (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 18, 2026Updated Sep 18, 2026Source checked Sep 18, 2026First seen by HOL Sep 18, 2026Material review Sep 18, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ArcadeData/arcadedb (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
ArcadeData/arcadedbgeneric	>=0 <26.9.1	26.9.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for ArcadeData/arcadedb.
Review the reported fix. Update ArcadeData/arcadedb to 26.9.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 18, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 18, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 18, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.