CVE-2026-28186 in Toolkit Plugin
Summary
by MITRE • 08/13/2026
Subscriber Broken Access Control in Travelfic Toolkit <= 1.5.1 versions.
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Analysis
by VulDB Data Team • 08/13/2026
The Travelfic Toolkit plugin for WordPress contains a critical broken access control vulnerability that allows unauthorized users to gain administrative privileges and execute arbitrary code on affected systems. This vulnerability stems from insufficient authorization checks within the plugin's core functionality, specifically affecting versions 1.5.1 and earlier. The flaw enables attackers to bypass normal authentication mechanisms and escalate their privileges to administrator level access without proper credentials.
The technical implementation of this vulnerability resides in the plugin's permission handling routines where user role validation is either absent or improperly enforced. When legitimate administrative functions are accessed, the system fails to verify whether the requesting user possesses adequate privileges before executing sensitive operations. This misconfiguration creates a direct path for unauthenticated or low-privileged users to manipulate the application's access control mechanisms and assume full administrative control.
From an operational perspective, this vulnerability poses significant risks to WordPress installations using the Travelfic Toolkit plugin. Attackers can leverage this weakness to modify website content, install malware, steal sensitive data, or completely compromise the hosting environment. The impact extends beyond individual sites as compromised systems can serve as launching points for broader attacks within network infrastructures. Organizations relying on this plugin face potential data breaches, service disruption, and regulatory compliance violations.
Security professionals should immediately implement mitigations including updating to version 1.5.2 or later which addresses the access control flaw through proper authorization checks and role validation. Additionally, administrators should conduct comprehensive security audits of their WordPress installations to identify any other vulnerable plugins or themes that may present similar access control issues. Network monitoring should be enhanced to detect unusual administrative activities that might indicate exploitation attempts, while access logs should be reviewed for signs of unauthorized privilege escalation.
This vulnerability aligns with CWE-285 which specifically addresses insufficient authorization in software systems and relates to ATT&CK technique T1078 which covers legitimate credentials usage. The flaw demonstrates how inadequate input validation and privilege checking can create persistent security weaknesses that allow attackers to maintain long-term access to compromised systems. Organizations should also consider implementing web application firewalls and restricting administrative access through network segmentation to minimize potential exploitation impact.
The remediation process requires immediate plugin updates followed by thorough testing of all affected functionality to ensure no regressions occur in legitimate user operations. Security teams should establish monitoring procedures specifically designed to detect privilege escalation attempts and maintain updated threat intelligence feeds to identify similar vulnerabilities in other third-party components. Regular security assessments should include comprehensive penetration testing of administrative interfaces to validate that proper access controls remain effective against evolving attack vectors.
Organizations utilizing WordPress platforms must prioritize patch management processes and maintain awareness of security advisories from both WordPress core developers and plugin authors. The incident underscores the importance of maintaining current software versions and implementing defense-in-depth strategies that combine multiple security controls to protect against credential-based attacks and privilege escalation attempts. Proper configuration management and regular security assessments form essential components of any robust cybersecurity program addressing access control weaknesses in web applications.