High severity · published Aug 19, 2026
CVE-2026-76223
ArcadeDB before 26.8.1 Permission Bypass via DEFINE FUNCTION
7.1
CVSS
0.4%
EPSS
No
On KEV
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.)
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AR
arcadedb · ArcadeData
before 26.8.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-76223
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-76223
github.com
https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-rv64-62hr-wv2p
www.vulncheck.com
https://www.vulncheck.com/advisories/arcadedb-before-permission-bypass-via-define-function
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