CVE-2026-27092 in WPAdverts Plugin
Summary
by MITRE • 02/19/2026
Missing Authorization vulnerability in Greg Winiarski WPAdverts wpadverts allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WPAdverts: from n/a through <= 2.2.11.
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Analysis
by VulDB Data Team • 02/19/2026
The vulnerability identified as CVE-2026-27092 represents a critical missing authorization flaw within the WPAdverts plugin for WordPress, specifically impacting versions ranging from the initial release through version 2.2.11. This security weakness stems from incorrectly configured access control security levels that permit unauthorized users to exploit functionality that should be restricted to administrators or authenticated users with appropriate privileges. The vulnerability exists within the core access control mechanisms of the plugin, creating a pathway for malicious actors to bypass intended security boundaries and gain elevated privileges within the WordPress environment.
The technical implementation of this vulnerability manifests through improper validation of user permissions and access control checks within the WPAdverts plugin codebase. Attackers can exploit this flaw to perform actions that require administrator-level privileges without possessing the necessary authentication credentials or authorization levels. This misconfiguration allows unauthorized individuals to manipulate advertisement data, modify plugin settings, or potentially execute arbitrary code depending on the specific implementation details of the affected functionality. The vulnerability directly maps to CWE-285, which addresses improper authorization issues in software systems, and aligns with ATT&CK technique T1078.004 for valid accounts and T1496 for resource hijacking through unauthorized access to administrative functions.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it fundamentally compromises the security model of WordPress sites utilizing the affected WPAdverts plugin. Organizations may experience unauthorized modifications to advertising content, potential data exposure, or complete compromise of the advertising management system. The vulnerability's persistence across multiple versions indicates a systemic issue within the plugin's access control implementation that requires immediate attention. Attackers could leverage this flaw to establish persistent access, modify advertisement campaigns, or potentially use the compromised system as a stepping stone for broader network infiltration.
Mitigation strategies for CVE-2026-27092 should prioritize immediate plugin updates to versions that address the authorization bypass issue, with administrators verifying that all affected installations have been properly patched. Additional defensive measures include implementing robust monitoring for unauthorized access attempts, reviewing user permissions within WordPress, and conducting thorough security audits of plugin configurations. Network segmentation and least privilege principles should be enforced to limit the potential damage from any successful exploitation attempts. Security teams should also consider implementing web application firewalls to detect and block suspicious access patterns targeting the vulnerable plugin functionality, while ensuring that all WordPress installations maintain current security practices including regular updates, strong authentication mechanisms, and comprehensive backup procedures to facilitate rapid recovery from potential compromise scenarios.