CVE-2025-43862: Dify Auth Bypass Vulnerability

CVE-2025-43862 Overview

CVE-2025-43862 is a broken access control vulnerability [CWE-284] in Dify, an open-source large language model (LLM) application development platform. Versions prior to 0.6.12 fail to enforce role-based authorization on the APP orchestration endpoints. A normal authenticated user can access and modify APP orchestration configurations even though the web UI does not expose this functionality to non-admin users. The flaw allows non-admin accounts to make unauthorized changes to applications managed within the platform. The maintainer langgenius patched the issue in version 0.6.12.

Critical Impact
Authenticated low-privilege users can modify APP orchestration in Dify, tampering with LLM application configurations and behavior across the platform.

Affected Products

Langgenius Dify (Node.js distribution) versions prior to 0.6.12
Self-hosted Dify deployments using the affected versions
Multi-tenant Dify instances where non-admin user accounts exist

Discovery Timeline

2025-04-25 - CVE-2025-43862 published to NVD
2025-08-01 - Last updated in NVD database

Technical Details for CVE-2025-43862

Vulnerability Analysis

The vulnerability stems from insufficient server-side authorization checks on Dify's APP orchestration API endpoints. While the front-end web UI hides orchestration controls from non-admin roles, the backend does not validate the caller's role before processing orchestration requests. Any authenticated user can craft direct API calls and reach orchestration functionality reserved for administrators.

APP orchestration in Dify controls prompt templates, model selection, tool bindings, and workflow logic for deployed LLM applications. Unauthorized modification of these settings can change how an application processes user input, which models are invoked, and what data the workflow returns. Attackers can inject malicious system prompts, redirect tool calls, or alter business logic without triggering admin-level authentication.

The impact aligns with [CWE-284: Improper Access Control], with strong consequences for integrity of the application configuration and lesser direct impact on confidentiality and availability.

Root Cause

The orchestration controller relies on UI gating rather than server-enforced role checks. The backend handler does not verify the authenticated principal holds an admin role before applying orchestration changes. This is a classic missing-authorization defect where the trust boundary is placed on the client rather than the server.

Attack Vector

Exploitation requires network access to the Dify API and a valid non-admin user account on the target tenant. The attacker authenticates normally, then issues HTTP requests to the orchestration endpoints with their session token. No user interaction or social engineering is required. The maintainer's pull request #5266 adds the missing permission checks. Refer to the GHSA-6pw4-jqhv-3626 advisory for technical details.

Detection Methods for CVE-2025-43862

Indicators of Compromise

Unexpected modifications to APP orchestration settings, prompts, model bindings, or workflow definitions performed by non-admin user accounts.
API request logs showing calls to orchestration endpoints originating from accounts that lack administrator role assignments.
Audit log entries showing configuration drift on Dify applications without a corresponding admin-initiated change ticket.

Detection Strategies

Review Dify application and reverse-proxy access logs for requests to orchestration API paths grouped by user role and flag non-admin callers.
Correlate orchestration configuration change events with the role of the authenticated principal to identify privilege mismatches.
Enable verbose audit logging on the Dify backend and compare snapshots of orchestration JSON over time to detect unauthorized edits.

Monitoring Recommendations

Forward Dify application logs, reverse-proxy logs, and authentication events into a centralized analytics platform for cross-correlation.
Alert on any HTTP 2xx responses to orchestration endpoints where the requesting user's role is not admin.
Track baseline orchestration configuration hashes and alert on unexpected diffs between deployments.

How to Mitigate CVE-2025-43862

Immediate Actions Required

Upgrade all Dify instances to version 0.6.12 or later, which contains the official access control fix.
Audit existing user accounts and revoke unnecessary access on multi-tenant or shared deployments.
Review APP orchestration configurations for unauthorized modifications and restore from known-good backups where drift is detected.
Rotate any API keys, model credentials, or tool integration secrets that were referenced in orchestration configurations during the exposure window.

Patch Information

The vendor released the fix in Dify 0.6.12. The patch is delivered through pull request #5266 and documented in the GitHub Security Advisory GHSA-6pw4-jqhv-3626. Upgrading is the recommended remediation path.

Workarounds

If immediate upgrade is not possible, enforce stricter role-based access controls (RBAC) at the application layer so only admin users can reach orchestration endpoints.
Use a reverse proxy or API gateway to restrict orchestration API paths to administrator IP ranges or admin-only authentication tokens.
Temporarily restrict non-admin user registration and disable shared tenancy until the patch is applied.

bash

# Example: restrict Dify orchestration endpoints at an NGINX reverse proxy
location ~ ^/console/api/apps/.*/model-config {
    allow 10.0.0.0/24;   # admin network only
    deny all;
    proxy_pass http://dify_backend;
}