VU#382143: Lowcoder Query Library API contains cross-tenant authorization bypass allowing for data exfiltration

Summary

Overview Lowcoder, version 2.4.10, contains an authorization bypass vulnerability in its Query Library feature’s API. Authenticated users with an admin or dev role can access private library-query data from other organizations within a multi-tenant Lowcoder instance. Description CVE-2026-16753 Lowcoder is an open-source low-code platform that allows individuals with minimal coding experience to build web applications through a visual drag-and-drop interface. Each Lowcoder project contains a centralized Query Library which stores the workspace’s data queries and sources for quick reuse; however, the LibraryQuery API service layer lacks organization-scope checks at two endpoints: metadata retrieval and query execution. While the application features a role-based access mechanism (requires admin or dev ), it only checks the role’s validity... Related CVEs: CVE-2026-16753.

Why it matters

CERT/CC notes often cover coordinated disclosures, multi-vendor exposure, infrastructure risk, or cases where remediation guidance is still developing.

Operator check

Review the CERT/CC Vulnerability Note and compare the affected vendor and product list against your inventory. Apply vendor fixes or compensating controls for Query Library API where available.

Sources