CVE-2026-75850Network attack vector

Per-type ACL bypass via unbound principal

Published Aug 18, 2026 · Updated Aug 19, 2026

Authorization bypass in Arcade Data ArcadeDB before 26.8.1 lets remote authenticated users read or write restricted types via batch or time-series HTTP requests. AbstractServerHttpHandler.checkAuthorizationOnDatabase checks only coarse database access and never calls setCurrentUser, so LocalBucket.checkPermissionsOnFile executes on worker threads with no bound principal and skips per-type ACL enforcement. Exposure requires deployments that use per-type or per-group ACLs inside a database; environments that rely only on database-level access control are not affected.

CVSS severity2.3
Low
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Arcade Data ArcadeDB before 26.8.1 lets remote authenticated users read or write restricted types via batch or time-series HTTP requests. AbstractServerHttpHandler.checkAuthorizationOnDatabase checks only coarse database access and never calls setCurrentUser, so LocalBucket.checkPermissionsOnFile executes on worker threads with no bound principal and skips per-type ACL enforcement. Exposure requires deployments that use per-type or per-group ACLs inside a database; environments that rely only on database-level access control are not affected.

The record

CVE
CVE-2026-75850
Published
Aug 18, 2026
Updated
Aug 19, 2026
Vendor
Arcade Data
Product
ArcadeDB
Classifications
CWE-862
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 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

2.3VulnCheck CNACVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
4.2GitHub Security AdvisoryCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/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.

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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-862Missing Authorization

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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