CVE-2026-35147 in DFXServer
Summary
by MITRE • 07/16/2026
HCL DFXServer is affected by a Broken Authentication vulnerability via direct API access. The application fails to verify the user's authentication status when accessing specific API endpoints, allowing an unauthenticated attacker to interact with the APIs and perform unauthorized actions without valid credentials.
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Analysis
by VulDB Data Team • 07/16/2026
The vulnerability in HCL DFXServer represents a critical broken authentication flaw that fundamentally undermines the application's security architecture. This weakness manifests through direct API access channels where the system fails to properly validate user credentials or session tokens before processing requests. The absence of proper authentication verification creates an exploitable gap in the application's access control mechanisms, allowing attackers to bypass legitimate authentication processes entirely.
From a technical perspective, this vulnerability operates at the application layer where API endpoints that should require authenticated access are being processed without adequate verification checks. The flaw likely stems from improper implementation of session management or authentication token validation within the DFXServer's API gateway or middleware components. Attackers can exploit this by directly calling vulnerable endpoints with crafted requests, potentially gaining access to sensitive data, system functions, or administrative capabilities that should be restricted to authorized users only.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it creates a pathway for attackers to perform privilege escalation attacks and execute malicious operations within the application environment. An unauthenticated attacker could potentially manipulate system configurations, access confidential information, or even compromise underlying infrastructure components that rely on DFXServer for business processes. This vulnerability directly violates fundamental security principles outlined in the CWE-287 category for improper authentication, which specifically addresses weaknesses where applications fail to properly authenticate users before granting access to protected resources.
The attack surface for this vulnerability encompasses all API endpoints within the DFXServer that lack proper authentication verification mechanisms. According to ATT&CK framework, this weakness maps to T1078 - Valid Accounts and T1566 - Phishing, as attackers can leverage this flaw to gain persistent access without needing legitimate credentials or to exploit other initial access vectors more effectively. The vulnerability's severity is amplified by the fact that it operates at the API level, making it particularly dangerous for enterprise environments where DFXServer likely handles business-critical processes and sensitive operational data.
Mitigation strategies should focus on implementing robust authentication verification mechanisms across all API endpoints, including proper session management, token validation, and request authentication checks. Organizations should deploy comprehensive API security controls that enforce mandatory authentication for every endpoint, implement rate limiting to prevent abuse, and establish monitoring systems to detect unauthorized access attempts. The fix requires thorough code review and implementation of standardized authentication protocols such as OAuth 2.0 or JWT-based token validation, ensuring that all application interfaces properly verify user credentials before processing any requests. Additionally, regular security testing including penetration testing and API security assessments should be conducted to identify similar vulnerabilities in the system architecture.