CVE-2026-76223Network attack vector

Function tampering via skipped schema authorization

Published Aug 19, 2026 · Updated Aug 19, 2026

Missing authorization in DEFINE FUNCTION in ArcadeDB before 26.8.1 allows remote authenticated users to overwrite stored SQL or Cypher functions. In DefineFunctionStatement.executeSimple, non-JavaScript updates to an existing function library bypass the guarded registerFunctionLibrary path and then call registerFunction plus saveConfiguration without an UPDATE_SCHEMA check. Reachability requires database access and a preexisting target library; JavaScript functions are excluded, but affected users can persistently tamper with admin-defined function logic and cause limited service interruption.

CVSS severity7.1
High
EPSS probability0.25%
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 DEFINE FUNCTION in ArcadeDB before 26.8.1 allows remote authenticated users to overwrite stored SQL or Cypher functions. In DefineFunctionStatement.executeSimple, non-JavaScript updates to an existing function library bypass the guarded registerFunctionLibrary path and then call registerFunction plus saveConfiguration without an UPDATE_SCHEMA check. Reachability requires database access and a preexisting target library; JavaScript functions are excluded, but affected users can persistently tamper with admin-defined function logic and cause limited service interruption.

The record

CVE
CVE-2026-76223
Published
Aug 19, 2026
Updated
Aug 19, 2026
Vendor
Arcade Data
Product
ArcadeDB
Classifications
CWE-862, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 19, 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

7.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
7.1VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

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-862Missing Authorization
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

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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