Medium severity · published Aug 1, 2026
CVE-2026-67344
ArcadeDB before 26.7.2 Authentication Bypass via ALTER TYPE
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
ArcadeDB before 26.7.2 fails to enforce the UPDATE_SCHEMA database permission on the ALTER TYPE ... CUSTOM and ALTER TYPE ... BUCKETSELECTIONSTRATEGY SQL operations, which map to setCustomValue and setBucketSelectionStrategy in LocalDocumentType. An authenticated user with only read access (e.g., a read-only API token) can submit these ALTER TYPE statements via the HTTP command endpoint to mutate a type's custom schema metadata and bucket-selection strategy, bypassing the documented updateSchema permission boundary and potentially corrupting schema metadata and record routing.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AR
arcadedb · ArcadeData
before 26.7.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-67344
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-67344
github.com
https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-8vr5-263f-x5r3
www.vulncheck.com
https://www.vulncheck.com/advisories/arcadedb-before-authentication-bypass-via-alter-type
More from arcadedb
9.9
CVE-2026-75851
ArcadeDB before 26.8.1 Authentication Bypass via Async Command
9.9
CVE-2026-75843
ArcadeDB before 26.8.1 Privilege Escalation via gRPC Transaction
9.8
CVE-2026-75854
ArcadeDB Redis Wire-Protocol Plugin Missing Authentication
9.8
CVE-2026-75852
ArcadeDB MongoDB wire protocol authentication bypass cross-database
9.8
CVE-2026-67341
ArcadeDB before 26.7.2 Authorization Bypass via SQL DEFINE FUNCTION