CVE-2026-75839Network attack vector

Cross-database metadata disclosure via missing authorization

Published Aug 18, 2026 · Updated Aug 18, 2026

Incorrect authorization in ArcadeDB before 26.8.1 allows remote authenticated users to read cross-database cluster metadata via Raft endpoints. GetClusterHandler.execute and PostBootstrapStateHandler.execute authenticate the caller but never invoke checkRootUser, canAccessToDatabase, or getAuthorizedDatabases, then iterate httpServer.getServer().getDatabaseNames() and return per-database names, transaction IDs, fingerprints, and topology data. Exposure is limited to HA deployments with arcadedb.ha.enabled and the ha-raft module loaded, and the disclosed data supports tenant reconnaissance rather than direct data modification or service interruption.

CVSS severity5.3
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in ArcadeDB before 26.8.1 allows remote authenticated users to read cross-database cluster metadata via Raft endpoints. GetClusterHandler.execute and PostBootstrapStateHandler.execute authenticate the caller but never invoke checkRootUser, canAccessToDatabase, or getAuthorizedDatabases, then iterate httpServer.getServer().getDatabaseNames() and return per-database names, transaction IDs, fingerprints, and topology data. Exposure is limited to HA deployments with arcadedb.ha.enabled and the ha-raft module loaded, and the disclosed data supports tenant reconnaissance rather than direct data modification or service interruption.

The record

CVE
CVE-2026-75839
Published
Aug 18, 2026
Updated
Aug 18, 2026
Vendor
Arcade Data
Product
ArcadeDB
Classifications
CWE-200, CWE-863, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 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 <26.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Arcade Data · ArcadeDBversion=0 <26.8.1

Published CVSS scores

5.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
4.3VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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.

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

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-863Incorrect Authorization
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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