CVE-2026-115214 in Datawiza Proxy Auth Plugin
Summary
by MITRE • 10/25/2026
The Datawiza Proxy Auth Plugin WordPress plugin before 1.1.1 does not verify that the user-identity and role HTTP request headers it trusts originate from a trusted reverse proxy, allowing unauthenticated attackers to create and authenticate as a WordPress administrator.
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Analysis
by VulDB Data Team • 10/25/2026
The vulnerability identified in the Datawiza Proxy Auth Plugin for WordPress prior to version 1.1.1 represents a critical authentication bypass resulting from improper validation of HTTP request headers. This plugin is designed to facilitate single sign-on or identity-based access by trusting specific HTTP headers, such as those conveying user-identity and role information, which are typically injected by an upstream reverse proxy after successful external authentication. The core technical flaw lies in the absence of a mechanism to verify that these trusted headers originate from a legitimate, authorized reverse proxy rather than directly from a client or untrusted intermediary. In standard secure architectures relying on header-based authentication, it is imperative for the application server to validate the source IP address of incoming requests against a whitelist of known proxy servers. Without this validation step, any entity capable of sending HTTP requests to the WordPress instance can manipulate these headers to forge administrative credentials.
This lack of source verification allows unauthenticated attackers to perform header injection attacks with severe consequences. By simply crafting an HTTP request that includes custom X-Forwarded-User or similar role-defining headers, an attacker can impersonate any user within the system, including those with administrator privileges. Since WordPress relies heavily on these roles for access control and content management, gaining administrative access through this method provides full control over the website. The attacker can modify site settings, install malicious plugins, inject code into themes or posts, exfiltrate sensitive data stored in the database, or use the compromised server as a pivot point for further network attacks. This flaw effectively nullifies the security boundary established by the external authentication system, rendering it useless against direct access attempts that bypass the proxy layer entirely.
From an industry standards perspective, this vulnerability is classified under CWE-287, which denotes Improper Authentication, specifically relating to the failure to validate the source of identity assertions. It also aligns with MITRE ATT&CK technique T1078, Valid Accounts, as it allows attackers to obtain legitimate administrative credentials through manipulation rather than brute force or credential theft. The scenario is particularly dangerous in environments where WordPress instances are exposed directly to the internet without a properly configured reverse proxy that strips untrusted headers, or when developers assume trust based solely on header presence rather than network-level verification.
To mitigate this vulnerability, organizations must immediately upgrade the Datawiza Proxy Auth Plugin to version 1.1.1 or later, where these validation checks have presumably been implemented. In addition to updating the software, system administrators should configure their reverse proxy servers, such as Nginx or Apache, to strip any user-defined authentication headers from incoming requests before they reach the WordPress application server. This ensures that only headers injected by the trusted proxy are processed. Furthermore, implementing IP whitelisting at the web server level can restrict access to specific endpoints or header-processing logic to known internal proxy addresses. Regular security audits and penetration testing should be conducted to ensure that no other plugins or configurations inadvertently expose similar trust boundaries, thereby maintaining a robust defense-in-depth strategy against authentication bypass attacks.