Description

Subscriber Broken Access Control in Travelfic Toolkit <= 1.5.1 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.1",
  "pubDate": "2026-08-13T14:17:00.560Z",
  "pubdate": "2026-08-13T14:17:00.560Z",
  "executiveSummary": "A broken access control vulnerability has been identified in the Travelfic Toolkit plugin for WordPress, affecting versions up to and including 1.5.1. This security flaw stems from inadequate authorization checks within the application logic, allowing authenticated users with low privileges, specifically the Subscriber role, to access functionalities or manipulate data restricted to higher-privilege roles.\nThe primary impact of this vulnerability is the potential unauthorized execution of administrative or privileged actions within the affected system. Depending on the specific exposed endpoints and functions, an attacker possessing standard Subscriber credentials could leverage this flaw to perform unauthorized data modifications, access sensitive application data, or trigger backend routines that should otherwise be protected against low-privilege access.\nThe affected product is the Travelfic Toolkit plugin across all versions <= 1.5.1. The risk implication is moderate to high, as it lowers the barrier for internal privilege escalation or unauthorized state changes within the WordPress installation.\nThe attacker capabilities required to exploit this vulnerability include a valid user account on the target WordPress site with Subscriber-level privileges. No complex interaction or advanced cryptographic bypasses are necessary if the underlying request lacks proper capability checks or nonce verification. Exploitation relies on interacting directly with the vulnerable AJAX actions, REST API endpoints, or form handlers exposed by the plugin without sufficient role validation.",
  "technicalDetails": "The root cause of the broken access control vulnerability in Travelfic Toolkit <= 1.5.1 lies in the missing or insufficient implementation of authorization checks—such as current_user_can() capabilities checks and cryptographic nonce validation—within the plugin's request handling functions.\nWordPress plugins frequently register custom AJAX endpoints, admin-post routines, or REST API routes to handle dynamic interface updates and backend operations. When these handlers fail to rigorously verify whether the incoming session possesses the necessary administrative or managerial capabilities, any authenticated user can invoke the underlying PHP functions.\nIn the context of this vulnerability, the vulnerable components are the backend request handlers implemented by the Travelfic Toolkit. Because the affected versions (<= 1.5.1) inadequately restrict access to specific functions based on user roles, an authenticated attacker with a baseline Subscriber account can successfully interact with these restricted endpoints.\nThe attack flow proceeds as follows: First, the malicious actor authenticates to the target WordPress application using legitimate Subscriber credentials. Second, the actor identifies the exposed endpoints, AJAX actions, or method calls associated with the Travelfic Toolkit that lack proper access control enforcement. Third, the attacker crafts a malicious HTTP request targeting the vulnerable endpoint, substituting parameters to execute unauthorized actions or retrieve restricted data. Finally, the server processes the request because the session authentication is valid and the capability checks are absent or improperly validated, resulting in unauthorized execution.\nThe authentication requirement is minimal, needing only standard Subscriber-level access to the WordPress site. The privilege requirements are similarly low, bypassing the intended managerial or administrative boundaries enforced by the application architecture. The network exposure is standard HTTP/HTTPS web application traffic, as the attack vector relies on interacting with the web server hosting the vulnerable WordPress instance.\nPayload behavior involves sending crafted POST or GET requests containing specific action parameters recognized by the vulnerable plugin routines. Post-exploitation impact includes unauthorized state modifications, potential data tampering, or exposure of internal plugin configurations, depending on the exact functionality governed by the insecure access controls."
}