Vulnerability · Published Sep 18, 2026 · Assigned by VulnCheck

CVE-2026-93595ArcadeDB before 26.9.1 ACL Bypass via query_database Tool

Medium 6.5

In plain English

A medium-severity missing authorization in arcadedb from ArcadeData. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.4%top 68.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

ArcadeDB before 26.9.1 contains an access control bypass vulnerability in the query_database tool exposed through the AI chat endpoints. The tool executes queries without binding the authenticated principal to DatabaseContext, causing per-type and per-bucket ACL checks to silently no-op and allowing authenticated users to read data they are explicitly denied at the per-type level. Attackers can prompt the AI assistant to execute queries against restricted types or buckets to retrieve sensitive data that would be rejected through normal query endpoints.

Affected products (as reported)

Vendor	Product	Versions
ArcadeData	arcadedb	0 – before 26.9.1

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

GitHub Security Advisory (GHSA-chrr-vr3p-crcc) vendor-advisory
VulnCheck Advisory: ArcadeDB before 26.9.1 ACL Bypass via query_database Tool third-party-advisory