What’s Vulnerable › Vulnerabilities

CVE-2026-67344: ArcadeDB before 26.7.2 Authentication Bypass via ALTER TYPE

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-01 · updated 2026-10-23
• Weakness: CWE-862

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.

Affected products

• ArcadeData arcadedb: before 26.7.2 — fixed in 26.7.2

How to fix

Upgrade to a fixed version: ArcadeData arcadedb 26.7.2. Check the vendor advisory for mitigations.

References

• https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-8vr5-263f-x5r3
• https://www.vulncheck.com/advisories/arcadedb-before-authentication-bypass-via-alter-type

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