CVE-2026-19376: Uasoft Badaso Privilege Escalation Flaw

CVE-2026-19376 Overview

CVE-2026-19376 is a permission-related vulnerability in Uasoft Badaso version 3.0.0-alpha, an open-source content management framework built on Laravel and Vue.js. The flaw resides in the ApiRequest::class function inside src/Routes/api.php, which handles the File API component. Improper permission enforcement allows remote attackers to abuse File API endpoints without appropriate authorization. The exploit has been publicly disclosed, increasing exposure for organizations running the affected release. The maintainers were notified through a GitHub issue but have not yet responded at the time of publication.

Critical Impact
Remote attackers can exploit weak permission checks in the Badaso File API to affect confidentiality, integrity, and availability of file resources without authentication.

Affected Products

Uasoft Badaso 3.0.0-alpha
Component: File API (src/Routes/api.php)
Function: ApiRequest::class

Discovery Timeline

2026-08-10 - CVE-2026-19376 published to NVD
2026-08-13 - Last updated in NVD database

Technical Details for CVE-2026-19376

Vulnerability Analysis

The vulnerability is classified under [CWE-266: Incorrect Privilege Assignment]. Badaso exposes File API routes through src/Routes/api.php, where the ApiRequest::class middleware or handler processes inbound requests. The permission logic fails to enforce adequate authorization on File API operations. As a result, unauthenticated remote requests can trigger actions that should be restricted to privileged users. The public disclosure of exploitation details raises the likelihood of opportunistic scanning against exposed Badaso instances.

Root Cause

The root cause is missing or misapplied permission validation within ApiRequest::class in the File API route definitions. Laravel route middleware normally enforces authentication and authorization before controller execution. In this configuration, the File API route handler does not consistently apply those checks, permitting requests that bypass the intended permission model.

Attack Vector

The attack requires network access to the Badaso application. No authentication or user interaction is needed. An attacker crafts HTTP requests targeting File API endpoints defined in src/Routes/api.php and interacts with file-related operations despite lacking authorized credentials. The vulnerability affects the confidentiality, integrity, and availability of the file resources managed by the framework.

Because no verified proof-of-concept code has been published, exploitation specifics are described in prose. Refer to the GitHub Issue Report and VulDB CVE-2026-19376 entries for further technical context.

Detection Methods for CVE-2026-19376

Indicators of Compromise

Unauthenticated HTTP requests reaching /api/* File API routes served by Badaso.
Unexpected file uploads, reads, or modifications originating from unknown source IP addresses.
Web server logs showing successful responses to File API calls without a preceding authentication request.

Detection Strategies

Review Laravel and web server access logs for File API endpoints invoked without valid session tokens or bearer credentials.
Correlate outbound file operations with authenticated user activity to spot orphaned actions.
Monitor for repeated enumeration patterns against src/Routes/api.php endpoints from a single source.

Monitoring Recommendations

Deploy a web application firewall (WAF) rule that flags unauthenticated access to Badaso File API routes.
Enable verbose logging within ApiRequest::class handlers to record caller identity and route path.
Alert on anomalous growth in file storage locations managed by Badaso.

How to Mitigate CVE-2026-19376

Immediate Actions Required

Restrict network exposure of Badaso 3.0.0-alpha instances to trusted networks or place them behind an authenticated reverse proxy.
Audit File API routes in src/Routes/api.php and add or verify auth middleware on every endpoint handled by ApiRequest::class.
Review file storage for unauthorized additions or modifications since the instance was first deployed.

Patch Information

No vendor patch has been released. The maintainers of Uasoft Badaso were notified via the GitHub Issue Report but have not responded at the time of publication. Track the VulDB Vulnerability #387270 entry for updates on any forthcoming fix.

Workarounds

Apply Laravel middleware such as auth:api or auth:sanctum to all File API routes to enforce authentication before request processing.
Implement role-based authorization checks in controllers invoked by ApiRequest::class prior to executing file operations.
Disable the File API entirely if it is not required by the deployment.

bash

# Configuration example: enforce authentication on Badaso File API routes
# Edit src/Routes/api.php and wrap File API routes with auth middleware

Route::middleware(['auth:api'])->group(function () {
    Route::any('file/{any}', ApiRequest::class)->where('any', '.*');
});