CVE-2026-93593Public exploitNetwork attack vectorHinoki check available

Authenticated TimeSeries data access via bucketless ACL omission

Published Sep 18, 2026 · Updated Sep 18, 2026

Incorrect authorization in Arcade Data ArcadeDB before 26.9.1 allows remote authenticated users to read or insert protected TimeSeries samples. The file-ID permission resolver skips TimeSeries types because they have no normal record bucket, leaving no ACL entry and allowing the access check to return true. Exploitation requires low-privilege credentials and a TimeSeries type governed by an explicit deny rule; successful access exposes existing samples or persists unauthorized samples.

CVSS severity8.6
High
EPSS probability0.36%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Incorrect authorization in Arcade Data ArcadeDB before 26.9.1 allows remote authenticated users to read or insert protected TimeSeries samples. The file-ID permission resolver skips TimeSeries types because they have no normal record bucket, leaving no ACL entry and allowing the access check to return true. Exploitation requires low-privilege credentials and a TimeSeries type governed by an explicit deny rule; successful access exposes existing samples or persists unauthorized samples.

The record

CVE
CVE-2026-93593
Published
Sep 18, 2026
Updated
Sep 18, 2026
Vendor
Arcade Data
Product
ArcadeDB
Classifications
CWE-863, T1565.001, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <26.9.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Arcade Data · ArcadeDBversion=0 <26.9.1

Published CVSS scores

8.6VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1565.001Stored Data Manipulation
T1213Data from Information Repositories

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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