CVE-2026-50756: next-ai-draw-io Information Disclosure

CVE-2026-50756 Overview

CVE-2026-50756 is an information disclosure vulnerability in DayuanJiang next-ai-draw-io version 0.4.13. The flaw resides in the x-ai-provider component and allows a remote attacker to obtain sensitive information without authentication or user interaction. The weakness is classified under [CWE-1390] (Weak Authentication) and is exploitable over the network with low attack complexity. The affected project is an AI-assisted diagram editor built on Next.js that integrates with third-party AI providers, meaning exposed data can include provider configuration and API secrets.

Critical Impact
Unauthenticated remote attackers can retrieve sensitive information exposed through the x-ai-provider component, potentially disclosing AI provider credentials or configuration data.

Affected Products

DayuanJiang next-ai-draw-io version 0.4.13
The x-ai-provider component within the application
Deployments exposing the affected component to untrusted networks

Discovery Timeline

2026-07-21 - CVE-2026-50756 published to the National Vulnerability Database (NVD)
2026-07-22 - Last updated in NVD database

Technical Details for CVE-2026-50756

Vulnerability Analysis

The vulnerability exists in the x-ai-provider component of next-ai-draw-io0.4.13. A remote attacker can interact with the component over the network and retrieve sensitive information that should not be exposed to unauthenticated clients. The issue is categorized as [CWE-1390], which covers weak authentication controls that permit unauthorized access to protected resources.

The impact is limited to confidentiality: attackers can read data, but the flaw does not directly enable modification of application state or denial of service. Because next-ai-draw-io integrates with AI providers such as OpenAI and Anthropic, disclosed information can include provider identifiers, endpoint URLs, or API keys used to authenticate outbound calls. Exposure of such secrets enables downstream abuse, including quota theft and pivoting into other tenant resources.

Root Cause

The root cause is insufficient authentication on the x-ai-provider request path. The component processes requests without validating the caller's identity, allowing anonymous clients to retrieve provider-scoped data. This pattern aligns with [CWE-1390], where an authentication mechanism is either missing, incomplete, or trivially bypassed on a sensitive endpoint.

Attack Vector

Exploitation requires only network access to the deployed application. An attacker sends a crafted HTTP request to the x-ai-provider endpoint and parses the response for sensitive fields. No credentials, tokens, or user interaction are required. Detailed reproduction notes are published in the GitHub CVE-2026-50756 Details and the GitHub Issue Discussion.

No verified proof-of-concept code is available; see the referenced advisories for exact request semantics.

Detection Methods for CVE-2026-50756

Indicators of Compromise

Unauthenticated HTTP requests targeting paths that include x-ai-provider or related API routes in next-ai-draw-io.
Anomalous outbound activity from AI provider accounts, such as unexpected regions, models, or token consumption spikes.
Repeated small-response GET requests from a single external source enumerating provider endpoints.

Detection Strategies

Inspect application and reverse-proxy logs for requests to x-ai-provider routes that lack authentication headers or session cookies.
Alert when responses from these routes contain provider identifiers, base URLs, or fields resembling API keys.
Correlate exposure events with subsequent authentication events at upstream AI providers to detect key reuse.

Monitoring Recommendations

Enable structured access logging on the next-ai-draw-io deployment and forward logs to a centralized analytics platform.
Rotate and monitor AI provider API keys, using provider-side usage dashboards to detect anomalous consumption.
Deploy a web application firewall rule to block or challenge unauthenticated access to x-ai-provider endpoints.

How to Mitigate CVE-2026-50756

Immediate Actions Required

Restrict network exposure of next-ai-draw-io0.4.13 by placing it behind an authenticated reverse proxy or VPN.
Rotate all AI provider API keys and secrets configured in affected deployments.
Audit logs for prior unauthenticated access to x-ai-provider routes and treat any hits as potential compromise.

Patch Information

No vendor patch is referenced in the NVD entry at the time of publication. Monitor the GitHub Issue Discussion and the project repository for a fixed release beyond version 0.4.13, and upgrade as soon as one is available.

Workarounds

Enforce authentication in front of the application using a reverse proxy such as nginx, Caddy, or an identity-aware proxy.
Remove or firewall the x-ai-provider route from public reachability until a vendor fix is published.
Store AI provider secrets in a runtime secret manager and inject them per-request rather than persisting them in a component readable by the affected endpoint.

bash

# Example nginx configuration to require authentication on the affected route
location /api/x-ai-provider {
    auth_request /_auth;
    proxy_pass http://127.0.0.1:3000;
}

location = /_auth {
    internal;
    proxy_pass http://auth-service.internal/validate;
    proxy_pass_request_body off;
    proxy_set_header Content-Length "";
    proxy_set_header X-Original-URI $request_uri;
}