What’s Vulnerable › Vulnerabilities

CVE-2026-76223: ArcadeDB before 26.8.1 Permission Bypass via DEFINE FUNCTION

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-19 · updated 2026-09-08
• Weakness: CWE-862

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.)

Affected products

• ArcadeData arcadedb: before 26.8.1 — fixed in 26.8.1

How to fix

Upgrade to a fixed version: ArcadeData arcadedb 26.8.1. Check the vendor advisory for mitigations.

References

• https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-rv64-62hr-wv2p
• https://www.vulncheck.com/advisories/arcadedb-before-permission-bypass-via-define-function

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