CVE-2026-68578Public exploitNetwork attack vector

Authenticated privilege escalation via unbound MCP principal

Published Aug 2, 2026 · Updated Aug 2, 2026

Authorization bypass in ArcadeDB before 26.7.3 allows remote authenticated users to execute database writes and JavaScript via MCP. The MCP HTTP transport resolves a database without binding the authenticated principal to DatabaseContext, so null-user permission checks return without enforcement. Exploitation requires MCP to be enabled and a non-root user to be allowed; default read access then permits writes, schema or security changes, and in-JVM JavaScript.

CVSS severity7.7
High
EPSS probability0.21%
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 ArcadeDB before 26.7.3 allows remote authenticated users to execute database writes and JavaScript via MCP. The MCP HTTP transport resolves a database without binding the authenticated principal to DatabaseContext, so null-user permission checks return without enforcement. Exploitation requires MCP to be enabled and a non-root user to be allowed; default read access then permits writes, schema or security changes, and in-JVM JavaScript.

The record

CVE
CVE-2026-68578
Published
Aug 2, 2026
Updated
Aug 2, 2026
Vendor
Arcade Data
Product
ArcadeDB
Classifications
CWE-862, CWE-306, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

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

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <26.7.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Arcade Data · ArcadeDBversion=0 <26.7.3

Published CVSS scores

7.7VulnCheckCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.5GitHub Security AdvisoryCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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 exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
CWE-306Missing Authentication for Critical Function
T1059.007JavaScript/JScript

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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