ArcadeDB before 26.8.1 Permission Bypass via DEFINE FUNCTION (CVE-2026-76223) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-76223

ArcadeDB before 26.8.1 Permission Bypass via DEFINE FUNCTION

Answer in brief

CVE-2026-76223 records a Unknown severity vulnerability in ArcadeDB before 26.8.1 Permission Bypass via DEFINE FUNCTION. The current sources do not mark it as known exploited. The current feed maps ArcadeData/arcadedb (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 19, 2026Updated Aug 19, 2026Source checked Aug 19, 2026First seen by HOL Aug 19, 2026Material review Aug 19, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ArcadeData/arcadedb (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
ArcadeData/arcadedbgeneric	>=0 <26.8.1	26.8.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for ArcadeData/arcadedb.
Review the reported fix. Update ArcadeData/arcadedb to 26.8.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 19, 2026

Sources and claim methodology

Upstream source description

ArcadeDB (com.arcadedb) versions 26.7.3 and earlier fail to enforce the UPDATE_SCHEMA permission check when a DEFINE FUNCTION statement targets an already-existing function library. A user with only database access can add or overwrite SQL or Cypher functions in an existing library and persist the change, enabling tampering with admin-defined function logic. The issue is fixed in 26.8.1. (JavaScript functions still trigger the UPDATE_SECURITY check and are not affected.)

Quoted source text, attributed separately from HOL analysis.