CVE-2026-75853Public exploitNetwork attack vector

Cross-database access via missing authorization

Published Aug 18, 2026 · Updated Aug 18, 2026

Missing authorization in Arcade Data ArcadeDB before 26.8.1 lets remote authenticated users read, modify, or drop data in other databases via Gremlin. The Gremlin wire-protocol plugin authenticates SASL PLAIN credentials, but GremlinServerAuthenticator passes no database name into ServerSecurity.authenticate, ArcadeGraphManager opens the traversal-source alias without canAccessToDatabase, and no principal is bound into the engine context. Any valid server credential, including one with no grants on the target database, can therefore bypass per-database and per-type ACL checks when the Gremlin plugin is enabled.

CVSS severity8.8
High
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Arcade Data ArcadeDB before 26.8.1 lets remote authenticated users read, modify, or drop data in other databases via Gremlin. The Gremlin wire-protocol plugin authenticates SASL PLAIN credentials, but GremlinServerAuthenticator passes no database name into ServerSecurity.authenticate, ArcadeGraphManager opens the traversal-source alias without canAccessToDatabase, and no principal is bound into the engine context. Any valid server credential, including one with no grants on the target database, can therefore bypass per-database and per-type ACL checks when the Gremlin plugin is enabled.

The record

CVE
CVE-2026-75853
Published
Aug 18, 2026
Updated
Aug 18, 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 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

8.8ArcadeDataCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7OSVCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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 exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization

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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