CVE-2025-15485 in Auto x LINE Plugin
Summary
by MITRE • 09/02/2026
The Auto x LINE WordPress plugin through 1.0.0 does not have authorization checks in some of its REST endpoints, allowing unauthenticated users to call them and update the plugin settings, clear logs etc
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Analysis
by VulDB Data Team • 09/02/2026
The vulnerability identified within the Auto x LINE WordPress plugin version 1.0.0 represents a critical failure in access control mechanisms for server-side application logic. Specifically, several REST API endpoints exposed by the plugin lack proper authorization checks, which are essential to verify that the requesting user has sufficient privileges to perform specific actions. In a secure implementation of WordPress plugins, any endpoint capable of modifying site configuration or performing administrative tasks must validate the current user's capabilities against predefined roles and permissions before executing the requested operation. The absence of these checks allows unauthenticated actors to interact directly with these endpoints via HTTP requests, bypassing the standard authentication gate that typically protects such functionality in a properly secured WordPress environment.
From a technical perspective, this flaw constitutes an Insecure Direct Object Reference or more accurately, Broken Access Control, as defined by the Common Weakness Enumeration (CWE) under CWE-284: Improper Access Control. The REST API endpoints involved are designed to handle sensitive operations such as updating plugin settings and clearing internal logs. Because these functions do not verify that the requester is an authenticated administrator or a user with specific capabilities, any individual on the internet can send crafted HTTP requests to manipulate the state of the WordPress installation. This effectively turns standard administrative features into publicly accessible tools for unauthorized configuration changes.
The operational impact of this vulnerability is significant and multifaceted. An attacker can exploit these endpoints to alter critical plugin settings, potentially disrupting the integration between the website and LINE messaging services or introducing malicious configurations that could lead further compromise. Furthermore, the ability to clear logs allows an adversary to cover their tracks after performing unauthorized actions, thereby hindering incident response efforts and forensic analysis by security teams monitoring for intrusions. This combination of configuration manipulation and log tampering creates a scenario where attackers can maintain persistence or cause denial of service conditions without leaving obvious traces in standard audit trails.
This vulnerability aligns with the MITRE ATT&CK framework technique T1546.008, which involves Event Triggered Execution through WordPress plugins, although it is more directly related to privilege escalation and unauthorized configuration changes often seen in techniques like T1078: Valid Accounts when combined with credential theft, or simply direct exploitation of misconfigured access controls as described in the Initial Access or Persistence tactics depending on how the altered settings are leveraged. The core issue remains a failure to enforce least-privilege principles at the API level, allowing actions reserved for high-privileged users to be executed by unauthenticated entities.
Mitigation strategies must prioritize immediate remediation of the codebase responsible for these endpoints. Developers should implement robust capability checks using WordPress functions such as current_user_can or similar authorization middleware within the REST route registration process. This ensures that only users with explicit administrative privileges can invoke methods related to settings updates and log management. Additionally, implementing rate limiting on API endpoints can help mitigate brute-force attempts if partial access is gained through other vectors. For site administrators using this plugin version, it is imperative to update to a patched release as soon as one becomes available from the vendor or disable the affected REST routes entirely until the code is secured. Regular security audits and static analysis of WordPress plugins are recommended to detect such authorization gaps before they can be exploited in production environments.