Vulnerability · Published Aug 18, 2026 · Assigned by VulnCheck

CVE-2026-75850ArcadeDB before 26.8.1 Per-Type ACL Bypass via Batch Handlers

Medium 4.2

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 0.2% (higher than 11% of all known vulnerabilities).

Severity (CVSS 3.1)4.2Medium

Exploit odds (30 days)0.2%top 89.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

ArcadeDB before 26.8.1 fails to bind the authenticated principal (setCurrentUser) on its batch and time-series HTTP handlers. Because no principal is bound on the worker thread, the engine's fine-grained per-type ACL layer (LocalBucket.checkPermissionsOnFile) does not execute for these handlers. In deployments that use per-type or per-group ACLs, a user with database access but only limited per-type permissions can read from and write to types they are not authorized to access by submitting requests to the batch/time-series endpoints. Deployments that rely solely on database-level access control are not affected.

Affected products (as reported)

Vendor	Product	Versions
ArcadeData	arcadedb	0 – before 26.8.1

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

References

GitHub Security Advisory (GHSA-c23x-pqcj-7hfm) vendor-advisory
VulnCheck Advisory: ArcadeDB before 26.8.1 Per-Type ACL Bypass via Batch Handlers third-party-advisory